CF1762407640376-tsm20251105200708

DNSWHOIS.INFO - 21.139.200.in-addr.arpa

Search for IP or hostnames:

21.139.200.in-addr.arpa checked at 2025-11-06T05:40:40.361Z 331ms 39/39/39 100% R:14

21.139.200.in-addr.arpa

MXmail.21.139.200.in-addr.arpa
NSpororoca.21.139.200.in-addr.arpa
A200.139.21.18🇧🇷 Rede Nacional de Ensino e Pesquisa - RNP
PTRpororoca.unifap.br
NSressaca.21.139.200.in-addr.arpa
A200.139.21.19🇧🇷 Rede Nacional de Ensino e Pesquisa - RNP
PTRressaca.unifap.br

139.200.in-addr.arpa

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Starts with same word

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AI analysis

The parent of pororoca.21.139.200.in-addr.arpa, ressaca.21.139.200.in-addr.arpa, 49.21.139.200.in-addr.arpa, 82.21.139.200.in-addr.arpa, 16.21.139.200.in-addr.arpa and a few other host names is 21.139.200.in-addr.arpa.

21.139.200.in-addr.arpa has two name servers: pororoca.21.139.200.in-addr.arpa and ressaca.21.139.200.in-addr.arpa.

Host names with a single IP:

pororoca.21.139.200.in-addr.arpa points to 200.139.21.18

ressaca.21.139.200.in-addr.arpa points to 200.139.21.19

21.139.200.in-addr.arpa is handled by a single mail server, mail.21.139.200.in-addr.arpa.

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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