SPF Record Checker

Check SPF Record

Verify SPF (Sender Policy Framework) records for any domain. SPF helps prevent email spoofing by specifying which mail servers are authorized to send email on behalf of a domain.

MX Records (Email Reception)

Mail servers that receive email for this domain:

     No MX records found - this domain cannot receive email

SPF Record Analysis

SPF defines which mail servers are authorized to send email for this domain:

v=spf1 ip4:18.156.205.64 ip4:3.65.3.180 ip4:3.72.182.33 ip4:3.74.81.189 ip4:63.176.194.123 ip4:18.197.217.180 ip4:3.75.33.185 ip4:35.158.23.94 ip4:3.64.237.68 ip4:63.178.143.178 ip4:52.28.197.132 ip4:52.57.120.243 ip4:63.178.132.221 ip4:18.199.210.3 ip4:18.158.153.154 ip4:44.245.243.92 ip4:44.246.1.125 ip4:44.246.68.102 ip4:44.246.77.92 ip4:52.13.214.179 ip4:52.26.1.71 ip4:52.34.181.151 ip4:52.42.203.116 ip4:35.155.198.111 ip4:52.12.53.23 ip4:52.35.192.45 ip4:35.162.73.231 ip4:34.218.115.239 ip4:35.83.148.184 ip4:50.112.246.219 ip4:107.22.191.150 ip4:13.216.54.180 ip4:13.216.7.111 ip4:18.207.52.234 ip4:3.211.80.218 ip4:3.216.221.67 ip4:3.221.209.22 ip4:34.193.58.168 ip4:34.198.94.229 ip4:34.197.254.9 ip4:54.211.126.101 ip4:34.197.10.50 ip4:34.198.218.121 ip4:50.16.246.183 ip4:44.210.169.44 -all
     SPF Version: v=spf1
     Sender IPv4 can be
  • 18.156.205.64
  • 3.65.3.180
  • 3.72.182.33
  • 3.74.81.189
  • 63.176.194.123
  • 18.197.217.180
  • 3.75.33.185
  • 35.158.23.94
  • 3.64.237.68
  • 63.178.143.178
  • 52.28.197.132
  • 52.57.120.243
  • 63.178.132.221
  • 18.199.210.3
  • 18.158.153.154
  • 44.245.243.92
  • 44.246.1.125
  • 44.246.68.102
  • 44.246.77.92
  • 52.13.214.179
  • 52.26.1.71
  • 52.34.181.151
  • 52.42.203.116
  • 35.155.198.111
  • 52.12.53.23
  • 52.35.192.45
  • 35.162.73.231
  • 34.218.115.239
  • 35.83.148.184
  • 50.112.246.219
  • 107.22.191.150
  • 13.216.54.180
  • 13.216.7.111
  • 18.207.52.234
  • 3.211.80.218
  • 3.216.221.67
  • 3.221.209.22
  • 34.193.58.168
  • 34.198.94.229
  • 34.197.254.9
  • 54.211.126.101
  • 34.197.10.50
  • 34.198.218.121
  • 50.16.246.183
  • 44.210.169.44

    • Example Domains

    SPF: @amazon.com
    SPF: @apple.com
    SPF: @azure.com
    SPF: @facebook.com
    SPF: @gmail.com
    SPF: @google.com
    SPF: @googlemail.com
    SPF: @icloud.com
    SPF: @instagram.com
    SPF: @microsoft.com
    SPF: @nytimes.com

    References

    Sender Policy Framework
    DKIM (DomainKeys)
    DMARC
    Open-SPF

    Frequently Asked Questions

    What is SPF and why is it important?

    SPF (Sender Policy Framework) is a DNS-based email authentication method that specifies which mail servers are allowed to send email for a domain. It helps prevent email spoofing and phishing by letting receiving servers verify that incoming mail comes from an authorized source.

    How do I read an SPF record?

    SPF records start with "v=spf1" followed by mechanisms: "include:" references another domain's SPF, "ip4:/ip6:" specifies allowed IP addresses, "a" allows the domain's A record IPs, "mx" allows the domain's mail servers. Records end with "~all" (softfail), "-all" (hardfail), or "+all" (allow all, not recommended).

    What is the difference between ~all and -all?

    "~all" (softfail) means unauthorized senders should be marked as suspicious but not rejected. "-all" (hardfail) means unauthorized senders should be rejected. Most domains use ~all during initial setup, then switch to -all once confident in their SPF configuration.

    How does SPF relate to DKIM and DMARC?

    SPF, DKIM, and DMARC work together for email authentication. SPF verifies the sending server, DKIM adds a cryptographic signature to verify message integrity, and DMARC ties them together with a policy for handling failures. For best protection, implement all three.