SPF Validator API
OnlineCredit Usage:5 per callLive Data
avg: 379ms|p50: 359ms|p75: 393ms|p90: 434ms|p99: 515ms
Overview
To use SPF Validator, you need an API key. You can get one by creating a free account and visiting your dashboard.
GET Endpoint
URL
https://api.apiverve.com/v1/spfvalidatorExample
How to call the SPF Validator API in different programming languages.
cURL Request
curl -X GET \
"https://api.apiverve.com/v1/spfvalidator?domain=myspace.com" \
-H "X-API-Key: your_api_key_here"JavaScript (Fetch API)
const response = await fetch('https://api.apiverve.com/v1/spfvalidator?domain=myspace.com', {
method: 'GET',
headers: {
'X-API-Key': 'your_api_key_here',
'Content-Type': 'application/json'
}
});
const data = await response.json();
console.log(data);Python (Requests)
import requests
headers = {
'X-API-Key': 'your_api_key_here',
'Content-Type': 'application/json'
}
response = requests.get('https://api.apiverve.com/v1/spfvalidator?domain=myspace.com', headers=headers)
data = response.json()
print(data)Go (net/http)
package main
import (
"fmt"
"io"
"net/http"
)
func main() {
req, _ := http.NewRequest("GET", "https://api.apiverve.com/v1/spfvalidator?domain=myspace.com", nil)
req.Header.Set("X-API-Key", "your_api_key_here")
req.Header.Set("Content-Type", "application/json")
client := &http.Client{}
resp, err := client.Do(req)
if err != nil {
panic(err)
}
defer resp.Body.Close()
body, _ := io.ReadAll(resp.Body)
fmt.Println(string(body))
}Example Response
{
"status": "ok",
"error": null,
"data": {
"host": "myspace.com",
"has_spf_record": true,
"dns_lookups_num": 9,
"spf_record": "v=spf1 mx ip4:63.208.226.34 ip4:204.16.32.0/22 ip4:67.134.143.0/24 ip4:216.205.243.0/24 ip4:34.85.156.5/32 ip4:35.245.108.108/32 ip4:34.86.129.193/32 ip4:34.86.134.94/32 ip4:34.85.222.234/32 ip4:34.86.176.234/32 ip4:34.86.125.212/32 ip4:34.85.224.60/32 ip4:34.86.160.49/32 ip4:35.245.64.166/32 ip4:35.188.226.11/32 ip4:34.86.208.228/32 ip4:34.85.216.144/32 ip4:35.221.22.153/32 ip4:34.86.137.108/32 ip4:34.86.51.35/32 ip4:34.150.221.40/32 ip4:34.85.216.70/32 ip4:34.86.37.191/32 ip4:34.85.214.215/32 ip4:35.236.234.82/32 ip4:34.86.161.241/32 ip4:216.32.181.16 ip4:216.178.32.0/20 ip4:168.235.224.0/24 include:_netblocks.mimecast.com -all",
"spf_records_list": [
{
"origin": "myspace.com",
"record": "v=spf1 mx ip4:63.208.226.34 ip4:204.16.32.0/22 ip4:67.134.143.0/24 ip4:216.205.243.0/24 ip4:34.85.156.5/32 ip4:35.245.108.108/32 ip4:34.86.129.193/32 ip4:34.86.134.94/32 ip4:34.85.222.234/32 ip4:34.86.176.234/32 ip4:34.86.125.212/32 ip4:34.85.224.60/32 ip4:34.86.160.49/32 ip4:35.245.64.166/32 ip4:35.188.226.11/32 ip4:34.86.208.228/32 ip4:34.85.216.144/32 ip4:35.221.22.153/32 ip4:34.86.137.108/32 ip4:34.86.51.35/32 ip4:34.150.221.40/32 ip4:34.85.216.70/32 ip4:34.86.37.191/32 ip4:34.85.214.215/32 ip4:35.236.234.82/32 ip4:34.86.161.241/32 ip4:216.32.181.16 ip4:216.178.32.0/20 ip4:168.235.224.0/24 include:_netblocks.mimecast.com -all",
"chars_num": 637,
"use_macro": false,
"domains": [
"_netblocks.mimecast.com"
],
"authorized_ips": {
"ipv4": [
"63.208.226.34",
"204.16.32.0/22",
"67.134.143.0/24",
"216.205.243.0/24",
"34.85.156.5/32",
"35.245.108.108/32",
"34.86.129.193/32",
"34.86.134.94/32",
"34.85.222.234/32",
"34.86.176.234/32",
"34.86.125.212/32",
"34.85.224.60/32",
"34.86.160.49/32",
"35.245.64.166/32",
"35.188.226.11/32",
"34.86.208.228/32",
"34.85.216.144/32",
"35.221.22.153/32",
"34.86.137.108/32",
"34.86.51.35/32",
"34.150.221.40/32",
"34.85.216.70/32",
"34.86.37.191/32",
"34.85.214.215/32",
"35.236.234.82/32",
"34.86.161.241/32",
"216.32.181.16",
"216.178.32.0/20",
"168.235.224.0/24"
]
}
},
{
"origin": "_netblocks.mimecast.com",
"record": "v=spf1 include:eu._netblocks.mimecast.com include:us._netblocks.mimecast.com include:za._netblocks.mimecast.com include:de._netblocks.mimecast.com include:au._netblocks.mimecast.com include:ca._netblocks.mimecast.com include:usb._netblocks.mimecast.com ~all",
"chars_num": 257,
"use_macro": false,
"domains": [
"eu._netblocks.mimecast.com",
"us._netblocks.mimecast.com",
"za._netblocks.mimecast.com",
"de._netblocks.mimecast.com",
"au._netblocks.mimecast.com",
"ca._netblocks.mimecast.com",
"usb._netblocks.mimecast.com"
]
},
{
"origin": "eu._netblocks.mimecast.com",
"record": "v=spf1 ip4:195.130.217.0/24 ip4:91.220.42.0/24 ip4:146.101.78.0/24 ip4:207.82.80.0/24 ip4:213.167.81.0/25 ip4:193.7.207.0/25 ip4:213.167.75.0/25 ip4:185.58.85.0/24 ip4:185.58.86.0/24 ip4:193.7.206.0/25 ip4:147.28.36.0/24 ~all",
"chars_num": 225,
"use_macro": false,
"authorized_ips": {
"ipv4": [
"195.130.217.0/24",
"91.220.42.0/24",
"146.101.78.0/24",
"207.82.80.0/24",
"213.167.81.0/25",
"193.7.207.0/25",
"213.167.75.0/25",
"185.58.85.0/24",
"185.58.86.0/24",
"193.7.206.0/25",
"147.28.36.0/24"
]
}
},
{
"origin": "us._netblocks.mimecast.com",
"record": "v=spf1 ip4:207.211.31.0/25 ip4:205.139.110.0/24 ip4:216.205.24.0/24 ip4:170.10.129.0/24 ip4:63.128.21.0/24 ip4:170.10.133.0/24 ip4:185.58.84.93/32 ip4:207.211.41.113/32 ip4:207.211.30.64/26 ip4:207.211.30.128/25 ip4:216.145.221.0/24 ip4:170.10.128.0/24 ip4:170.10.132.56/29 ip4:170.10.132.64/29 ~all",
"chars_num": 299,
"use_macro": false,
"authorized_ips": {
"ipv4": [
"207.211.31.0/25",
"205.139.110.0/24",
"216.205.24.0/24",
"170.10.129.0/24",
"63.128.21.0/24",
"170.10.133.0/24",
"185.58.84.93/32",
"207.211.41.113/32",
"207.211.30.64/26",
"207.211.30.128/25",
"216.145.221.0/24",
"170.10.128.0/24",
"170.10.132.56/29",
"170.10.132.64/29"
]
}
},
{
"origin": "za._netblocks.mimecast.com",
"record": "v=spf1 ip4:41.74.192.0/22 ip4:41.74.200.0/23 ip4:41.74.196.0/22 ip4:41.74.204.0/23 ip4:41.74.206.0/24 ~all",
"chars_num": 106,
"use_macro": false,
"authorized_ips": {
"ipv4": [
"41.74.192.0/22",
"41.74.200.0/23",
"41.74.196.0/22",
"41.74.204.0/23",
"41.74.206.0/24"
]
}
},
{
"origin": "de._netblocks.mimecast.com",
"record": "v=spf1 ip4:51.163.158.0/24 ip4:194.104.109.0/24 ip4:194.104.111.0/24 ip4:194.104.110.21/32 ip4:194.104.110.240/28 ip4:62.140.10.21/32 ip4:62.140.7.0/24 ip4:194.104.108.240/29 ip4:194.104.108.21/32 ip4:51.163.159.0/24 ~all",
"chars_num": 221,
"use_macro": false,
"authorized_ips": {
"ipv4": [
"51.163.158.0/24",
"194.104.109.0/24",
"194.104.111.0/24",
"194.104.110.21/32",
"194.104.110.240/28",
"62.140.10.21/32",
"62.140.7.0/24",
"194.104.108.240/29",
"194.104.108.21/32",
"51.163.159.0/24"
]
}
},
{
"origin": "au._netblocks.mimecast.com",
"record": "v=spf1 ip4:103.13.69.0/24 ip4:124.47.150.0/24 ip4:124.47.189.0/24 ip4:103.96.23.0/24 ip4:103.96.21.0/24 ip4:180.189.28.0/24 ip4:216.145.217.0/24 ip4:103.96.22.96/28 ip4:103.96.22.22/32 ip4:103.96.20.22/32 ip4:103.96.20.96/28 ~all",
"chars_num": 229,
"use_macro": false,
"authorized_ips": {
"ipv4": [
"103.13.69.0/24",
"124.47.150.0/24",
"124.47.189.0/24",
"103.96.23.0/24",
"103.96.21.0/24",
"180.189.28.0/24",
"216.145.217.0/24",
"103.96.22.96/28",
"103.96.22.22/32",
"103.96.20.22/32",
"103.96.20.96/28"
]
}
},
{
"origin": "ca._netblocks.mimecast.com",
"record": "v=spf1 ip4:170.10.145.0/24 ip4:170.10.147.0/24 ip4:170.10.144.126/32 ip4:170.10.146.126/32 ip4:170.10.144.240/29 ip4:170.10.146.240/29 ip4:216.145.216.0/24 ~all",
"chars_num": 160,
"use_macro": false,
"authorized_ips": {
"ipv4": [
"170.10.145.0/24",
"170.10.147.0/24",
"170.10.144.126/32",
"170.10.146.126/32",
"170.10.144.240/29",
"170.10.146.240/29",
"216.145.216.0/24"
]
}
},
{
"origin": "usb._netblocks.mimecast.com",
"record": "v=spf1 ip4:170.10.151.0/24 ip4:170.10.153.0/24 ip4:170.10.150.240/29 ip4:170.10.152.240/29 ip4:170.10.156.0/24 ip4:170.10.157.0/24 ~all",
"chars_num": 135,
"use_macro": false,
"authorized_ips": {
"ipv4": [
"170.10.151.0/24",
"170.10.153.0/24",
"170.10.150.240/29",
"170.10.152.240/29",
"170.10.156.0/24",
"170.10.157.0/24"
]
}
}
],
"domains_extracted": [
"myspace.com",
"_netblocks.mimecast.com",
"eu._netblocks.mimecast.com",
"us._netblocks.mimecast.com",
"za._netblocks.mimecast.com",
"de._netblocks.mimecast.com",
"au._netblocks.mimecast.com",
"ca._netblocks.mimecast.com",
"usb._netblocks.mimecast.com"
],
"authorized_ips": {
"ipv4": [
"63.208.226.34",
"204.16.32.0/22",
"67.134.143.0/24",
"216.205.243.0/24",
"34.85.156.5/32",
"35.245.108.108/32",
"34.86.129.193/32",
"34.86.134.94/32",
"34.85.222.234/32",
"34.86.176.234/32",
"34.86.125.212/32",
"34.85.224.60/32",
"34.86.160.49/32",
"35.245.64.166/32",
"35.188.226.11/32",
"34.86.208.228/32",
"34.85.216.144/32",
"35.221.22.153/32",
"34.86.137.108/32",
"34.86.51.35/32",
"34.150.221.40/32",
"34.85.216.70/32",
"34.86.37.191/32",
"34.85.214.215/32",
"35.236.234.82/32",
"34.86.161.241/32",
"216.32.181.16",
"216.178.32.0/20",
"168.235.224.0/24",
"195.130.217.0/24",
"91.220.42.0/24",
"146.101.78.0/24",
"207.82.80.0/24",
"213.167.81.0/25",
"193.7.207.0/25",
"213.167.75.0/25",
"185.58.85.0/24",
"185.58.86.0/24",
"193.7.206.0/25",
"147.28.36.0/24",
"207.211.31.0/25",
"205.139.110.0/24",
"216.205.24.0/24",
"170.10.129.0/24",
"63.128.21.0/24",
"170.10.133.0/24",
"185.58.84.93/32",
"207.211.41.113/32",
"207.211.30.64/26",
"207.211.30.128/25",
"216.145.221.0/24",
"170.10.128.0/24",
"170.10.132.56/29",
"170.10.132.64/29",
"41.74.192.0/22",
"41.74.200.0/23",
"41.74.196.0/22",
"41.74.204.0/23",
"41.74.206.0/24",
"51.163.158.0/24",
"194.104.109.0/24",
"194.104.111.0/24",
"194.104.110.21/32",
"194.104.110.240/28",
"62.140.10.21/32",
"62.140.7.0/24",
"194.104.108.240/29",
"194.104.108.21/32",
"51.163.159.0/24",
"103.13.69.0/24",
"124.47.150.0/24",
"124.47.189.0/24",
"103.96.23.0/24",
"103.96.21.0/24",
"180.189.28.0/24",
"216.145.217.0/24",
"103.96.22.96/28",
"103.96.22.22/32",
"103.96.20.22/32",
"103.96.20.96/28",
"170.10.145.0/24",
"170.10.147.0/24",
"170.10.144.126/32",
"170.10.146.126/32",
"170.10.144.240/29",
"170.10.146.240/29",
"216.145.216.0/24",
"170.10.151.0/24",
"170.10.153.0/24",
"170.10.150.240/29",
"170.10.152.240/29",
"170.10.156.0/24",
"170.10.157.0/24"
],
"ipv6": []
},
"issues_found": [],
"spf_valid": true,
"has_issues": false,
"macros_found": false,
"ip_pass": false,
"elapsed_ms": 431
}
}Authentication
The SPF Validator API requires authentication via API key. Include your API key in the request header:
Required Header
X-API-Key: your_api_key_hereInteractive API Playground
Test the SPF Validator API directly in your browser with live requests and responses.
Live Test SPF Validator APITry it free with instant results - no signup required
Parameters
The SPF Validator API supports multiple query options. Use one of the following:
Option 1: Validate SPF Record & Test IP Authorization
| Parameter | Type | Required | Description | Default | Example |
|---|---|---|---|---|---|
domain | string | required | The domain to validate the SPF record for Format: domain (e.g., myspace.com) | - |
Option 2: Test IP Authorization
| Parameter | Type | Required | Description | Default | Example |
|---|---|---|---|---|---|
domain | string | required | The domain to validate the SPF record for Format: domain (e.g., myspace.com) | - | |
ip | string | required | IP address to test against the domain's SPF policy | - |
Response
The SPF Validator API returns responses in JSON, XML, YAML, and CSV formats. The JSON response is shown in the Example section above; alternative formats below.
Other Response Formats
XML Response
200 OK
<?xml version="1.0" encoding="UTF-8"?>
<response>
<status>ok</status>
<error xsi:nil="true" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"/>
<data>
<host>myspace.com</host>
<has_spf_record>true</has_spf_record>
<dns_lookups_num>9</dns_lookups_num>
<spf_record>v=spf1 mx ip4:63.208.226.34 ip4:204.16.32.0/22 ip4:67.134.143.0/24 ip4:216.205.243.0/24 ip4:34.85.156.5/32 ip4:35.245.108.108/32 ip4:34.86.129.193/32 ip4:34.86.134.94/32 ip4:34.85.222.234/32 ip4:34.86.176.234/32 ip4:34.86.125.212/32 ip4:34.85.224.60/32 ip4:34.86.160.49/32 ip4:35.245.64.166/32 ip4:35.188.226.11/32 ip4:34.86.208.228/32 ip4:34.85.216.144/32 ip4:35.221.22.153/32 ip4:34.86.137.108/32 ip4:34.86.51.35/32 ip4:34.150.221.40/32 ip4:34.85.216.70/32 ip4:34.86.37.191/32 ip4:34.85.214.215/32 ip4:35.236.234.82/32 ip4:34.86.161.241/32 ip4:216.32.181.16 ip4:216.178.32.0/20 ip4:168.235.224.0/24 include:_netblocks.mimecast.com -all</spf_record>
<spf_records_list>
<item>
<origin>myspace.com</origin>
<record>v=spf1 mx ip4:63.208.226.34 ip4:204.16.32.0/22 ip4:67.134.143.0/24 ip4:216.205.243.0/24 ip4:34.85.156.5/32 ip4:35.245.108.108/32 ip4:34.86.129.193/32 ip4:34.86.134.94/32 ip4:34.85.222.234/32 ip4:34.86.176.234/32 ip4:34.86.125.212/32 ip4:34.85.224.60/32 ip4:34.86.160.49/32 ip4:35.245.64.166/32 ip4:35.188.226.11/32 ip4:34.86.208.228/32 ip4:34.85.216.144/32 ip4:35.221.22.153/32 ip4:34.86.137.108/32 ip4:34.86.51.35/32 ip4:34.150.221.40/32 ip4:34.85.216.70/32 ip4:34.86.37.191/32 ip4:34.85.214.215/32 ip4:35.236.234.82/32 ip4:34.86.161.241/32 ip4:216.32.181.16 ip4:216.178.32.0/20 ip4:168.235.224.0/24 include:_netblocks.mimecast.com -all</record>
<chars_num>637</chars_num>
<use_macro>false</use_macro>
<domains>
<domain>_netblocks.mimecast.com</domain>
</domains>
<authorized_ips>
<ipv4>
<item>63.208.226.34</item>
<item>204.16.32.0/22</item>
<item>67.134.143.0/24</item>
<item>216.205.243.0/24</item>
<item>34.85.156.5/32</item>
<item>35.245.108.108/32</item>
<item>34.86.129.193/32</item>
<item>34.86.134.94/32</item>
<item>34.85.222.234/32</item>
<item>34.86.176.234/32</item>
<item>34.86.125.212/32</item>
<item>34.85.224.60/32</item>
<item>34.86.160.49/32</item>
<item>35.245.64.166/32</item>
<item>35.188.226.11/32</item>
<item>34.86.208.228/32</item>
<item>34.85.216.144/32</item>
<item>35.221.22.153/32</item>
<item>34.86.137.108/32</item>
<item>34.86.51.35/32</item>
<item>34.150.221.40/32</item>
<item>34.85.216.70/32</item>
<item>34.86.37.191/32</item>
<item>34.85.214.215/32</item>
<item>35.236.234.82/32</item>
<item>34.86.161.241/32</item>
<item>216.32.181.16</item>
<item>216.178.32.0/20</item>
<item>168.235.224.0/24</item>
</ipv4>
</authorized_ips>
</item>
<item>
<origin>_netblocks.mimecast.com</origin>
<record>v=spf1 include:eu._netblocks.mimecast.com include:us._netblocks.mimecast.com include:za._netblocks.mimecast.com include:de._netblocks.mimecast.com include:au._netblocks.mimecast.com include:ca._netblocks.mimecast.com include:usb._netblocks.mimecast.com ~all</record>
<chars_num>257</chars_num>
<use_macro>false</use_macro>
<domains>
<domain>eu._netblocks.mimecast.com</domain>
<domain>us._netblocks.mimecast.com</domain>
<domain>za._netblocks.mimecast.com</domain>
<domain>de._netblocks.mimecast.com</domain>
<domain>au._netblocks.mimecast.com</domain>
<domain>ca._netblocks.mimecast.com</domain>
<domain>usb._netblocks.mimecast.com</domain>
</domains>
</item>
<item>
<origin>eu._netblocks.mimecast.com</origin>
<record>v=spf1 ip4:195.130.217.0/24 ip4:91.220.42.0/24 ip4:146.101.78.0/24 ip4:207.82.80.0/24 ip4:213.167.81.0/25 ip4:193.7.207.0/25 ip4:213.167.75.0/25 ip4:185.58.85.0/24 ip4:185.58.86.0/24 ip4:193.7.206.0/25 ip4:147.28.36.0/24 ~all</record>
<chars_num>225</chars_num>
<use_macro>false</use_macro>
<authorized_ips>
<ipv4>
<item>195.130.217.0/24</item>
<item>91.220.42.0/24</item>
<item>146.101.78.0/24</item>
<item>207.82.80.0/24</item>
<item>213.167.81.0/25</item>
<item>193.7.207.0/25</item>
<item>213.167.75.0/25</item>
<item>185.58.85.0/24</item>
<item>185.58.86.0/24</item>
<item>193.7.206.0/25</item>
<item>147.28.36.0/24</item>
</ipv4>
</authorized_ips>
</item>
<item>
<origin>us._netblocks.mimecast.com</origin>
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YAML Response
200 OK
status: ok
error: null
data:
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record: >-
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record: >-
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record: >-
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record: >-
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record: >-
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- 170.10.132.64/29
- 41.74.192.0/22
- 41.74.200.0/23
- 41.74.196.0/22
- 41.74.204.0/23
- 41.74.206.0/24
- 51.163.158.0/24
- 194.104.109.0/24
- 194.104.111.0/24
- 194.104.110.21/32
- 194.104.110.240/28
- 62.140.10.21/32
- 62.140.7.0/24
- 194.104.108.240/29
- 194.104.108.21/32
- 51.163.159.0/24
- 103.13.69.0/24
- 124.47.150.0/24
- 124.47.189.0/24
- 103.96.23.0/24
- 103.96.21.0/24
- 180.189.28.0/24
- 216.145.217.0/24
- 103.96.22.96/28
- 103.96.22.22/32
- 103.96.20.22/32
- 103.96.20.96/28
- 170.10.145.0/24
- 170.10.147.0/24
- 170.10.144.126/32
- 170.10.146.126/32
- 170.10.144.240/29
- 170.10.146.240/29
- 216.145.216.0/24
- 170.10.151.0/24
- 170.10.153.0/24
- 170.10.150.240/29
- 170.10.152.240/29
- 170.10.156.0/24
- 170.10.157.0/24
ipv6: []
issues_found: []
spf_valid: true
has_issues: false
macros_found: false
ip_pass: false
elapsed_ms: 431
CSV Response
200 OK
| key | value |
|---|---|
| host | myspace.com |
| has_spf_record | true |
| dns_lookups_num | 9 |
| spf_record | v=spf1 mx ip4:63.208.226.34 ip4:204.16.32.0/22 ip4:67.134.143.0/24 ip4:216.205.243.0/24 ip4:34.85.156.5/32 ip4:35.245.108.108/32 ip4:34.86.129.193/32 ip4:34.86.134.94/32 ip4:34.85.222.234/32 ip4:34.86.176.234/32 ip4:34.86.125.212/32 ip4:34.85.224.60/32 ip4:34.86.160.49/32 ip4:35.245.64.166/32 ip4:35.188.226.11/32 ip4:34.86.208.228/32 ip4:34.85.216.144/32 ip4:35.221.22.153/32 ip4:34.86.137.108/32 ip4:34.86.51.35/32 ip4:34.150.221.40/32 ip4:34.85.216.70/32 ip4:34.86.37.191/32 ip4:34.85.214.215/32 ip4:35.236.234.82/32 ip4:34.86.161.241/32 ip4:216.32.181.16 ip4:216.178.32.0/20 ip4:168.235.224.0/24 include:_netblocks.mimecast.com -all |
| spf_records_list | [{origin:myspace.com,record:v=spf1 mx ip4:63.208.226.34 ip4:204.16.32.0/22 ip4:67.134.143.0/24 ip4:216.205.243.0/24 ip4:34.85.156.5/32 ip4:35.245.108.108/32 ip4:34.86.129.193/32 ip4:34.86.134.94/32 ip4:34.85.222.234/32 ip4:34.86.176.234/32 ip4:34.86.125.212/32 ip4:34.85.224.60/32 ip4:34.86.160.49/32 ip4:35.245.64.166/32 ip4:35.188.226.11/32 ip4:34.86.208.228/32 ip4:34.85.216.144/32 ip4:35.221.22.153/32 ip4:34.86.137.108/32 ip4:34.86.51.35/32 ip4:34.150.221.40/32 ip4:34.85.216.70/32 ip4:34.86.37.191/32 ip4:34.85.214.215/32 ip4:35.236.234.82/32 ip4:34.86.161.241/32 ip4:216.32.181.16 ip4:216.178.32.0/20 ip4:168.235.224.0/24 include:_netblocks.mimecast.com -all,chars_num:637,use_macro:false,domains:[_netblocks.mimecast.com],authorized_ips:{ipv4:[63.208.226.34,204.16.32.0/22,67.134.143.0/24,216.205.243.0/24,34.85.156.5/32,35.245.108.108/32,34.86.129.193/32,34.86.134.94/32,34.85.222.234/32,34.86.176.234/32,34.86.125.212/32,34.85.224.60/32,34.86.160.49/32,35.245.64.166/32,35.188.226.11/32,34.86.208.228/32,34.85.216.144/32,35.221.22.153/32,34.86.137.108/32,34.86.51.35/32,34.150.221.40/32,34.85.216.70/32,34.86.37.191/32,34.85.214.215/32,35.236.234.82/32,34.86.161.241/32,216.32.181.16,216.178.32.0/20,168.235.224.0/24]}},{origin:_netblocks.mimecast.com,record:v=spf1 include:eu._netblocks.mimecast.com include:us._netblocks.mimecast.com include:za._netblocks.mimecast.com include:de._netblocks.mimecast.com include:au._netblocks.mimecast.com include:ca._netblocks.mimecast.com include:usb._netblocks.mimecast.com ~all,chars_num:257,use_macro:false,domains:[eu._netblocks.mimecast.com,us._netblocks.mimecast.com,za._netblocks.mimecast.com,de._netblocks.mimecast.com,au._netblocks.mimecast.com,ca._netblocks.mimecast.com,usb._netblocks.mimecast.com]},{origin:eu._netblocks.mimecast.com,record:v=spf1 ip4:195.130.217.0/24 ip4:91.220.42.0/24 ip4:146.101.78.0/24 ip4:207.82.80.0/24 ip4:213.167.81.0/25 ip4:193.7.207.0/25 ip4:213.167.75.0/25 ip4:185.58.85.0/24 ip4:185.58.86.0/24 ip4:193.7.206.0/25 ip4:147.28.36.0/24 ~all,chars_num:225,use_macro:false,authorized_ips:{ipv4:[195.130.217.0/24,91.220.42.0/24,146.101.78.0/24,207.82.80.0/24,213.167.81.0/25,193.7.207.0/25,213.167.75.0/25,185.58.85.0/24,185.58.86.0/24,193.7.206.0/25,147.28.36.0/24]}},{origin:us._netblocks.mimecast.com,record:v=spf1 ip4:207.211.31.0/25 ip4:205.139.110.0/24 ip4:216.205.24.0/24 ip4:170.10.129.0/24 ip4:63.128.21.0/24 ip4:170.10.133.0/24 ip4:185.58.84.93/32 ip4:207.211.41.113/32 ip4:207.211.30.64/26 ip4:207.211.30.128/25 ip4:216.145.221.0/24 ip4:170.10.128.0/24 ip4:170.10.132.56/29 ip4:170.10.132.64/29 ~all,chars_num:299,use_macro:false,authorized_ips:{ipv4:[207.211.31.0/25,205.139.110.0/24,216.205.24.0/24,170.10.129.0/24,63.128.21.0/24,170.10.133.0/24,185.58.84.93/32,207.211.41.113/32,207.211.30.64/26,207.211.30.128/25,216.145.221.0/24,170.10.128.0/24,170.10.132.56/29,170.10.132.64/29]}},{origin:za._netblocks.mimecast.com,record:v=spf1 ip4:41.74.192.0/22 ip4:41.74.200.0/23 ip4:41.74.196.0/22 ip4:41.74.204.0/23 ip4:41.74.206.0/24 ~all,chars_num:106,use_macro:false,authorized_ips:{ipv4:[41.74.192.0/22,41.74.200.0/23,41.74.196.0/22,41.74.204.0/23,41.74.206.0/24]}},{origin:de._netblocks.mimecast.com,record:v=spf1 ip4:51.163.158.0/24 ip4:194.104.109.0/24 ip4:194.104.111.0/24 ip4:194.104.110.21/32 ip4:194.104.110.240/28 ip4:62.140.10.21/32 ip4:62.140.7.0/24 ip4:194.104.108.240/29 ip4:194.104.108.21/32 ip4:51.163.159.0/24 ~all,chars_num:221,use_macro:false,authorized_ips:{ipv4:[51.163.158.0/24,194.104.109.0/24,194.104.111.0/24,194.104.110.21/32,194.104.110.240/28,62.140.10.21/32,62.140.7.0/24,194.104.108.240/29,194.104.108.21/32,51.163.159.0/24]}},{origin:au._netblocks.mimecast.com,record:v=spf1 ip4:103.13.69.0/24 ip4:124.47.150.0/24 ip4:124.47.189.0/24 ip4:103.96.23.0/24 ip4:103.96.21.0/24 ip4:180.189.28.0/24 ip4:216.145.217.0/24 ip4:103.96.22.96/28 ip4:103.96.22.22/32 ip4:103.96.20.22/32 ip4:103.96.20.96/28 ~all,chars_num:229,use_macro:false,authorized_ips:{ipv4:[103.13.69.0/24,124.47.150.0/24,124.47.189.0/24,103.96.23.0/24,103.96.21.0/24,180.189.28.0/24,216.145.217.0/24,103.96.22.96/28,103.96.22.22/32,103.96.20.22/32,103.96.20.96/28]}},{origin:ca._netblocks.mimecast.com,record:v=spf1 ip4:170.10.145.0/24 ip4:170.10.147.0/24 ip4:170.10.144.126/32 ip4:170.10.146.126/32 ip4:170.10.144.240/29 ip4:170.10.146.240/29 ip4:216.145.216.0/24 ~all,chars_num:160,use_macro:false,authorized_ips:{ipv4:[170.10.145.0/24,170.10.147.0/24,170.10.144.126/32,170.10.146.126/32,170.10.144.240/29,170.10.146.240/29,216.145.216.0/24]}},{origin:usb._netblocks.mimecast.com,record:v=spf1 ip4:170.10.151.0/24 ip4:170.10.153.0/24 ip4:170.10.150.240/29 ip4:170.10.152.240/29 ip4:170.10.156.0/24 ip4:170.10.157.0/24 ~all,chars_num:135,use_macro:false,authorized_ips:{ipv4:[170.10.151.0/24,170.10.153.0/24,170.10.150.240/29,170.10.152.240/29,170.10.156.0/24,170.10.157.0/24]}}] |
| domains_extracted | [myspace.com,_netblocks.mimecast.com,eu._netblocks.mimecast.com,us._netblocks.mimecast.com,za._netblocks.mimecast.com,de._netblocks.mimecast.com,au._netblocks.mimecast.com,ca._netblocks.mimecast.com,usb._netblocks.mimecast.com] |
| authorized_ips | {ipv4:[63.208.226.34,204.16.32.0/22,67.134.143.0/24,216.205.243.0/24,34.85.156.5/32,35.245.108.108/32,34.86.129.193/32,34.86.134.94/32,34.85.222.234/32,34.86.176.234/32,34.86.125.212/32,34.85.224.60/32,34.86.160.49/32,35.245.64.166/32,35.188.226.11/32,34.86.208.228/32,34.85.216.144/32,35.221.22.153/32,34.86.137.108/32,34.86.51.35/32,34.150.221.40/32,34.85.216.70/32,34.86.37.191/32,34.85.214.215/32,35.236.234.82/32,34.86.161.241/32,216.32.181.16,216.178.32.0/20,168.235.224.0/24,195.130.217.0/24,91.220.42.0/24,146.101.78.0/24,207.82.80.0/24,213.167.81.0/25,193.7.207.0/25,213.167.75.0/25,185.58.85.0/24,185.58.86.0/24,193.7.206.0/25,147.28.36.0/24,207.211.31.0/25,205.139.110.0/24,216.205.24.0/24,170.10.129.0/24,63.128.21.0/24,170.10.133.0/24,185.58.84.93/32,207.211.41.113/32,207.211.30.64/26,207.211.30.128/25,216.145.221.0/24,170.10.128.0/24,170.10.132.56/29,170.10.132.64/29,41.74.192.0/22,41.74.200.0/23,41.74.196.0/22,41.74.204.0/23,41.74.206.0/24,51.163.158.0/24,194.104.109.0/24,194.104.111.0/24,194.104.110.21/32,194.104.110.240/28,62.140.10.21/32,62.140.7.0/24,194.104.108.240/29,194.104.108.21/32,51.163.159.0/24,103.13.69.0/24,124.47.150.0/24,124.47.189.0/24,103.96.23.0/24,103.96.21.0/24,180.189.28.0/24,216.145.217.0/24,103.96.22.96/28,103.96.22.22/32,103.96.20.22/32,103.96.20.96/28,170.10.145.0/24,170.10.147.0/24,170.10.144.126/32,170.10.146.126/32,170.10.144.240/29,170.10.146.240/29,216.145.216.0/24,170.10.151.0/24,170.10.153.0/24,170.10.150.240/29,170.10.152.240/29,170.10.156.0/24,170.10.157.0/24],ipv6:[]} |
| issues_found | [] |
| spf_valid | true |
| has_issues | false |
| macros_found | false |
| ip_pass | false |
| elapsed_ms | 431 |
Response Structure
All API responses follow a consistent structure with the following fields:
| Field | Type | Description | Example |
|---|---|---|---|
status | string | Indicates whether the request was successful ("ok") or failed ("error") | ok |
error | string | null | Contains error message if status is "error", otherwise null | null |
data | object | null | Contains the API response data if successful, otherwise null | {...} |
Learn more about response formats →
Response Data Fields
When the request is successful, the data object contains the following fields:
Response fields marked with Premium are available exclusively on paid plans.View pricing
| Field | Type | Sample Value | Description |
|---|---|---|---|
host | string | The domain name being validated | |
has_spf_record | boolean | Whether the domain has SPF record | |
dns_lookups_numPremium | number | Total number of DNS lookups performed | |
spf_record | string | The complete SPF record string | |
| [ ] Array items: | array[9] | List of SPF records with detailed parsing | |
└ origin | string | Domain origin of SPF record | |
└ record | string | Full SPF record content | |
└ chars_num | number | Character count of SPF record | |
└ use_macro | boolean | Whether record uses macros | |
└ domains | array | Domains referenced in SPF record | |
└ authorized_ipsPremium | object | All IP addresses authorized by SPF | |
└ ipv4 | array | IPv4 addresses authorized to send mail | |
domains_extractedPremium | array | All domains found in SPF chain | |
authorized_ipsPremium | object | All IP addresses authorized by SPF | |
└ ipv4 | array | All IPv4 addresses authorized by SPF | |
└ ipv6 | array | All IPv6 addresses authorized by SPF | |
issues_foundPremium | array | List of SPF validation issues | |
spf_valid | boolean | Whether SPF record is valid | |
has_issues | boolean | Whether validation found issues | |
macros_foundPremium | boolean | Whether SPF record uses macros |
Headers
Only X-API-Key is required. Optional headers include Accept for response format negotiation (JSON, XML, or YAML), User-Agent, and X-Request-ID for request tracing. See all request headers →
GraphQL AccessALPHA
Access SPF Validator through GraphQL to combine it with other API calls in a single request. Query only the spf validator data you need with precise field selection, and orchestrate complex data fetching workflows.
Test SPF Validator in the GraphQL Explorer to confirm availability and experiment with queries.
Credit Cost: Each API called in your GraphQL query consumes its standard credit cost.
GraphQL Endpoint
POST https://api.apiverve.com/v1/graphqlGraphQL Query Example
query {
spfvalidator(
input: {
domain: "myspace.com"
}
) {
host
has_spf_record
dns_lookups_num
spf_record
spf_records_list
domains_extracted
authorized_ips {
ipv4
ipv6
}
issues_found
spf_valid
has_issues
macros_found
ip_pass
elapsed_ms
}
}Note: Authentication is handled via the x-api-key header in your GraphQL request, not as a query parameter.
CORS Support
The SPF Validator API accepts cross-origin requests from any origin, so it can be called directly from browser-based applications without a proxy. See CORS support →
Rate Limiting
SPF Validator requests are throttled per minute on the Free plan and unthrottled on paid plans. Exceeding the limit returns 429 Too Many Requests; rate-limit usage is reported in the X-RateLimit-Limit, X-RateLimit-Remaining, and X-RateLimit-Reset response headers. See per-plan limits and best practices →
Error Codes
The SPF Validator API uses standard HTTP status codes — 200 on success, 400 for invalid parameters, 401 for missing or invalid keys, 403 for insufficient credits, 429 for rate-limit exhaustion, and 500/503 for server-side issues. Each error response includes an X-Request-ID header you can quote when contacting support. See full error handling guide →
SDKs for SPF Validator
Official SPF Validator packages on npm, PyPI, NuGet, and JitPack — plus a Postman collection and an OpenAPI spec. See the SDK guide →
No-Code Integrations
SPF Validator works with Zapier, Make, Pipedream, n8n, and Power Automate using the same API key. See setup guides →
Frequently Asked Questions
How do I get an API key for SPF Validator?
Sign up for a free account at dashboard.apiverve.com. Your API key will be automatically generated and available in your dashboard. The same key works for SPF Validator and all other APIVerve APIs. The free plan includes 1,000 credits plus a 500 credit bonus.
How many credits does SPF Validator cost?
Each successful SPF Validator API call consumes credits based on plan tier. Check the pricing section above for the exact credit cost. Failed requests and errors don't consume credits, so you only pay for successful spf validator lookups.
Can I use SPF Validator in production?
The free plan is for testing and development only. For production use of SPF Validator, upgrade to a paid plan (Starter, Pro, or Mega) which includes commercial use rights, no attribution requirements, and guaranteed uptime SLAs. All paid plans are production-ready.
Can I use SPF Validator from a browser?
Yes! The SPF Validator API supports CORS with wildcard configuration, so you can call it directly from browser-based JavaScript without needing a proxy server. See the CORS section above for details.
What happens if I exceed my SPF Validator credit limit?
When you reach your monthly credit limit, SPF Validator API requests will return an error until you upgrade your plan or wait for the next billing cycle. You'll receive notifications at 80% and 95% usage to give you time to upgrade if needed.
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