SPF Record Checker

Please enter a host name to check.

Example host names with SPF records:
ipswitch.com, microsoft.com, google.com, gmail.com, apple.com, postini.com, ebay.com, orange.ch, bitcointalk.org, thecannells.org, facebook.com, shaw.ca, ubs.com, kitterman.com

SPF checker created by an author of the SPF RFC4408.
http://www.kitterman.com/spf/validate.html

 

The following nameservers for the host name gmail.com were found.
ns2.google.com [216.239.34.10]
ns1.google.com [216.239.32.10]
ns3.google.com [216.239.36.10]
ns4.google.com [216.239.38.10]

The following rules for the host name gmail.com were found. A total of 4 queries (as defined by RFC4408) were performed for fetching SPF and related records.
The DNS lookups for SPF took 676msec.
  1. Redirect to host _spf.google.com with 4 rules.
    1. Inlcude 12 allow rules from host _netblocks.google.com.
      1. Allow all from the range 35.190.247.0/24 (35.190.247.0 - 35.190.247.255)
      2. Allow all from the range 64.233.160.0/19 (64.233.160.0 - 64.233.191.255)
      3. Allow all from the range 66.102.0.0/20 (66.102.0.0 - 66.102.15.255)
      4. Allow all from the range 66.249.80.0/20 (66.249.80.0 - 66.249.95.255)
      5. Allow all from the range 72.14.192.0/18 (72.14.192.0 - 72.14.255.255)
      6. Allow all from the range 74.125.0.0/16 (74.125.0.0 - 74.125.255.255)
      7. Allow all from the range 108.177.8.0/21 (108.177.8.0 - 108.177.15.255)
      8. Allow all from the range 173.194.0.0/16 (173.194.0.0 - 173.194.255.255)
      9. Allow all from the range 209.85.128.0/17 (209.85.128.0 - 209.85.255.255)
      10. Allow all from the range 216.58.192.0/19 (216.58.192.0 - 216.58.223.255)
      11. Allow all from the range 216.239.32.0/19 (216.239.32.0 - 216.239.63.255)
      12. Soft deny all IPs which do not match any previous rule
    2. Inlcude 7 allow rules from host _netblocks2.google.com.
      1. Allow all from the range 2001:4860:4000::/36
      2. Allow all from the range 2404:6800:4000::/36
      3. Allow all from the range 2607:f8b0:4000::/36
      4. Allow all from the range 2800:3f0:4000::/36
      5. Allow all from the range 2a00:1450:4000::/36
      6. Allow all from the range 2c0f:fb50:4000::/36
      7. Soft deny all IPs which do not match any previous rule
    3. Inlcude 11 allow rules from host _netblocks3.google.com.
      1. Allow all from the range 172.217.0.0/19 (172.217.0.0 - 172.217.31.255)
      2. Allow all from the range 172.217.32.0/20 (172.217.32.0 - 172.217.47.255)
      3. Allow all from the range 172.217.128.0/19 (172.217.128.0 - 172.217.159.255)
      4. Allow all from the range 172.217.160.0/20 (172.217.160.0 - 172.217.175.255)
      5. Allow all from the range 172.217.192.0/19 (172.217.192.0 - 172.217.223.255)
      6. Allow all from the range 172.253.56.0/21 (172.253.56.0 - 172.253.63.255)
      7. Allow all from the range 172.253.112.0/20 (172.253.112.0 - 172.253.127.255)
      8. Allow all from the range 108.177.96.0/19 (108.177.96.0 - 108.177.127.255)
      9. Allow all from the range 35.191.0.0/16 (35.191.0.0 - 35.191.255.255)
      10. Allow all from the range 130.211.0.0/22 (130.211.0.0 - 130.211.3.255)
      11. Soft deny all IPs which do not match any previous rule
    4. Soft deny all IPs which do not match any previous rule