xnnd tools for dns Wombatmail DNSBL Resource Spam Resource
SPF Lookup: Multi DNS?

Checking TXT record for comcast.net using Unbound DNS server ( (or click here to check using the Google DNS website.)
comcast.net descriptive text "google-site-verification=g7KA0NF2z-1XIBz7vWW88zvVYlJeiG56UPOYHF2tqY0"
comcast.net descriptive text "v=spf1 ip4: ip4: ip4: include:_spfv6.comcast.net include:_spf.mdp.comcast.net ~all"

Test this SPF record with the Kitterman SPF validation tool by entering the sending IP address and pressing the submit button.
IP address:     Check DKIM instead.

Service provider: Comcast.
Run domain blocklist check for comcast.net.

Did you receive spam from comcast.net? Try looking up where to send a spam report using abuse.net.
Or check its IP address in ARIN and look for an abuse contact.

* Note: "SPF" lookup checks TXT records but only returns ones containing "v=spf1", and will not display other TXT records found in DNS.

Multi DNS Options: No/off=Check one random public server. Yes=Check public DNS servers. Special=Check DNS servers authoritative for zone/domain.

The authoritative DNS servers for this host are: dns101.comcast.net, dns102.comcast.net, dns103.comcast.net, dns104.comcast.net, dns105.comcast.net.

Run at: Wed Mar 22 07:54:06 CDT 2023