CF1763729110805-tsm20251116095642

MXLIST.NET - 21.65.251.77.in-addr.arpa

Search for IP or hostnames:

21.65.251.77.in-addr.arpa checked at 2025-11-21T12:45:10.791Z 609ms 49/49/49 100% R:17 allDone:true timedOut:false

21.65.251.77.in-addr.arpa

NSrns1.upc.biz
A2001:730:3e12::134 🇳🇱 LibertyGlobal
A195.34.133.134🇦🇹 LibertyGlobal
PTRrns1.upc.biz
NSrns2.upc.biz
A2001:730:3e12:1000::134 🇳🇱 LibertyGlobal
A213.47.222.134🇳🇱 LibertyGlobal
PTRrns2.upc.biz
PTR77-251-65-21.cable.dynamic.v4.ziggo.nl
A77.251.65.21🇳🇱 TNF-AS
PTR77-251-65-21.cable.dynamic.v4.ziggo.nl

65.251.77.in-addr.arpa

NSrns1.upc.biz
NSrns2.upc.biz

Starts with same word

Starts similarily

AI analysis

Two name servers rns1.upc.biz and rns2.upc.biz handle the delegation for 21.65.251.77.in-addr.arpa.

21.65.251.77.in-addr.arpa shares the same name server setup as other domains, for example 36.0.248.77.in-addr.arpa, 49.99.89.in-addr.arpa, 36.30.84.in-addr.arpa, 222.89.81.83.in-addr.arpa and 131.10.31.in-addr.arpa.

Host names with two IP numbers:

rns1.upc.biz points to 2001:730:3e12::134 and 195.34.133.134.

rns2.upc.biz points to 2001:730:3e12:1000::134 and 213.47.222.134.

77-251-65-21.cable.dynamic.v4.ziggo.nl points to a single IP number: 77.251.65.21.

Perform reverse DNS lookup as well as normal forward DNS. Check Autonomous System Numbers (ASNs) and BGP connections between Internet Service Providers.
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