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 outlook.com were found.
ns1-05.azure-dns.com [13.107.236.5]
ns2-05.azure-dns.net
ns3-05.azure-dns.org
ns4-05.azure-dns.info

The following rules for the host name outlook.com were found. A total of 1 queries (as defined by RFC4408) were performed for fetching SPF and related records.
The DNS lookups for SPF took 154msec.
  1. Inlcude 5 allow rules from host spf2.outlook.com.
    1. Allow all from the range 40.92.0.0/16 (40.92.0.0 - 40.92.255.255)
    2. Allow all from the range 52.103.0.0/17 (52.103.0.0 - 52.103.127.255)
    3. Allow all from the range 2a01:111:f403:2800::/53
    4. Allow all from the range 2a01:111:f403:d000::/53
    5. Deny all IPs which do not match any previous rule
  2. Deny all IPs which do not match any previous rule