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 rules for the host name microsoft.com were found. A total of 8 queries (as defined by RFC4408) were performed for fetching SPF and related records.
The DNS lookups for SPF took 1150msec.
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Inlcude 13 allow rules from host _spf-a.microsoft.com.
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Allow all from the ip 216.99.5.67
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Allow all from the ip 216.99.5.68
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Allow all from the ip 202.177.148.100
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Allow all from the ip 203.122.32.250
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Allow all from the ip 202.177.148.110
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Allow all from the ip 213.199.128.139
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Allow all from the ip 213.199.128.145
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Allow all from the ip 207.46.50.72
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Allow all from the ip 207.46.50.82
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Allow all from the range 65.55.42.224/28 (65.55.42.224 - 65.55.42.239)
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Allow all from the ip 13.78.233.182
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Inlcude 10 allow rules from host spf.protection.outlook.com.
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Allow all from the range 40.92.0.0/15 (40.92.0.0 - 40.93.255.255)
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Allow all from the range 40.107.0.0/16 (40.107.0.0 - 40.107.255.255)
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Allow all from the range 52.100.0.0/14 (52.100.0.0 - 52.103.255.255)
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Allow all from the range 104.47.0.0/17 (104.47.0.0 - 104.47.127.255)
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Allow all from the range 2a01:111:f400::/48
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Allow all from the range 2a01:111:f403::/49
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Allow all from the range 2a01:111:f403:8000::/50
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Allow all from the range 2a01:111:f403:c000::/51
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Allow all from the range 2a01:111:f403:f000::/52
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Deny all IPs which do not match any previous rule
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Soft deny all IPs which do not match any previous rule
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Inlcude 12 allow rules from host _spf-b.microsoft.com.
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Inlcude 10 allow rules from host _spf-mdm.microsoft.com.
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Allow all from the range 134.170.113.0/26 (134.170.113.0 - 134.170.113.63)
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Allow all from the range 131.253.30.0/24 (131.253.30.0 - 131.253.30.255)
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Allow all from the range 157.56.120.128/26 (157.56.120.128 - 157.56.120.191)
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Allow all from the range 134.170.174.0/24 (134.170.174.0 - 134.170.174.255)
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Allow all from the range 134.170.141.64/26 (134.170.141.64 - 134.170.141.127)
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Allow all from the range 134.170.143.0/24 (134.170.143.0 - 134.170.143.255)
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Allow all from the ip 157.58.249.3
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Allow all from the ip 65.55.29.77
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Allow all from the range 131.253.121.0/26 (131.253.121.0 - 131.253.121.63)
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Deny all IPs which do not match any previous rule
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Allow all from the ip 207.46.22.35
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Allow all from the range 207.46.22.98/29 (207.46.22.98 - 207.46.22.103)
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Allow all from the ip 217.77.141.52
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Allow all from the ip 217.77.141.59
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Allow all from the ip 203.32.4.25
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Allow all from the range 23.103.224.0/19 (23.103.224.0 - 23.103.255.255)
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Allow all from the range 206.191.224.0/19 (206.191.224.0 - 206.191.255.255)
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Allow all from the range 65.52.80.137/32 (65.52.80.137 - 65.52.80.137)
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Allow all from the ip 51.140.75.55
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Allow all from the ip 13.70.32.43
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Soft deny all IPs which do not match any previous rule
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Inlcude 10 allow rules from host _spf-mdm.microsoft.com.
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Inlcude 14 allow rules from host _spf-c.microsoft.com.
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Allow all from the ip 213.199.138.181
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Allow all from the ip 213.199.138.191
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Allow all from the ip 207.46.52.71
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Allow all from the ip 207.46.52.79
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Allow all from the ip 86.61.88.25
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Allow all from the range 167.220.67.232/29 (167.220.67.232 - 167.220.67.239)
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Allow all from the range 157.58.196.96/29 (157.58.196.96 - 157.58.196.103)
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Allow all from the ip 147.243.128.24
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Allow all from the ip 147.243.128.26
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Allow all from the ip 147.243.1.153
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Allow all from the ip 147.243.1.47
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Allow all from the ip 147.243.1.48
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Allow all from the ip 52.250.126.174
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Soft deny all IPs which do not match any previous rule
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Inlcude 11 allow rules from host _spf-ssg-a.msft.net.
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Allow all from the range 104.44.112.128/25 (104.44.112.128 - 104.44.112.255)
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Allow all from the ip 134.170.27.8
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Allow all from the range 157.58.30.128/25 (157.58.30.128 - 157.58.30.255)
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Allow all from the range 20.63.210.192/28 (20.63.210.192 - 20.63.210.207)
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Allow all from the range 20.94.180.64/28 (20.94.180.64 - 20.94.180.79)
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Allow all from the ip 40.112.65.63
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Allow all from the range 52.185.106.240/28 (52.185.106.240 - 52.185.106.255)
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Allow all from the range 52.234.172.96/28 (52.234.172.96 - 52.234.172.111)
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Allow all from the range 52.236.28.240/28 (52.236.28.240 - 52.236.28.255)
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Allow all from the range 66.119.150.192/26 (66.119.150.192 - 66.119.150.255)
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Soft deny all IPs which do not match any previous rule
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Inlcude 13 allow rules from host spf-a.hotmail.com.
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Allow all from the range 157.55.0.192/26 (157.55.0.192 - 157.55.0.255)
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Allow all from the range 157.55.1.128/26 (157.55.1.128 - 157.55.1.191)
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Allow all from the range 157.55.2.0/25 (157.55.2.0 - 157.55.2.127)
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Allow all from the range 65.54.190.0/24 (65.54.190.0 - 65.54.190.255)
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Allow all from the range 65.54.51.64/26 (65.54.51.64 - 65.54.51.127)
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Allow all from the range 65.54.61.64/26 (65.54.61.64 - 65.54.61.127)
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Allow all from the range 65.55.111.0/24 (65.55.111.0 - 65.55.111.255)
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Allow all from the range 65.55.116.0/25 (65.55.116.0 - 65.55.116.127)
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Allow all from the range 65.55.34.0/24 (65.55.34.0 - 65.55.34.255)
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Allow all from the range 65.55.90.0/24 (65.55.90.0 - 65.55.90.255)
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Allow all from the range 65.54.241.0/24 (65.54.241.0 - 65.54.241.255)
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Allow all from the range 207.46.117.0/24 (207.46.117.0 - 207.46.117.255)
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Soft deny all IPs which do not match any previous rule
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Inlcude 26 allow rules from host _spf1-meo.microsoft.com.
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Allow all from the ip 52.165.175.144
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Allow all from the ip 52.247.53.144
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Allow all from the ip 157.55.254.216
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Allow all from the ip 13.74.143.28
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Allow all from the ip 104.214.25.77
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Allow all from the ip 207.46.225.107
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Allow all from the ip 51.137.58.21
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Allow all from the ip 138.91.172.26
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Allow all from the ip 52.250.107.196
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Allow all from the ip 13.92.31.129
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Allow all from the ip 51.144.100.179
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Allow all from the ip 52.160.39.140
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Allow all from the ip 52.244.206.214
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Allow all from the ip 13.72.50.45
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Allow all from the range 20.118.139.208/30 (20.118.139.208 - 20.118.139.211)
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Allow all from the range 20.98.194.68/30 (20.98.194.68 - 20.98.194.71)
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Allow all from the range 20.83.222.104/30 (20.83.222.104 - 20.83.222.107)
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Allow all from the range 20.88.157.184/30 (20.88.157.184 - 20.88.157.187)
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Allow all from the range 20.59.80.4/30 (20.59.80.4 - 20.59.80.7)
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Allow all from the range 20.51.6.32/30 (20.51.6.32 - 20.51.6.35)
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Allow all from the range 20.97.34.220/30 (20.97.34.220 - 20.97.34.223)
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Allow all from the range 20.107.239.64/30 (20.107.239.64 - 20.107.239.67)
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Allow all from the range 20.105.209.76/30 (20.105.209.76 - 20.105.209.79)
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Allow all from the range 20.98.148.156/30 (20.98.148.156 - 20.98.148.159)
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Allow all from the range 20.69.8.108/30 (20.69.8.108 - 20.69.8.111)
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Soft deny all IPs which do not match any previous rule
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Deny all IPs which do not match any previous rule