~/tools / spf-checker

SPF Checker

Check SPF record. Counts DNS lookups against the 10-lookup limit, flags `+all` security holes, and identifies common mistakes.

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[ OK ] Strict SPF (-all). Unauthorized senders are rejected.
── output ─────
v=spf1 ip4:155.136.80.0/24 ip4:80.75.73.242 ip4:81.145.55.71 ip4:82.144.239.194 ip4:195.3.184.231 ip4:195.3.184.230 ip4:195.225.218.101 ip4:195.184.243.2 ip4:155.136.18.0/24 -all
DNS lookups
0 / 10
All mechanism
-all
Includes (0)
IP4 (9)
155.136.80.0/24, 80.75.73.242, 81.145.55.71, 82.144.239.194, 195.3.184.231, 195.3.184.230, 195.225.218.101, 195.184.243.2, 155.136.18.0/24
IP6 (0)
// Save natwest.com → we'll run this daily and alert on changes. /signup →