DNSWHOIS.INFO - 51.1.in-addr.arpa
Search for IP or hostnames:
51.1.in-addr.arpa checked at 2025-09-07T18:20:59.962Z 1139ms 63/63/63 100% R:2651.1.in-addr.arpa
| NS | dns5.edu.cn | ||||||
| A | 2402:f000:1:801::8:30 🇨🇳 Tsinghua University | ||||||
| PTR | ns5.cernet.net | ||||||
| PTR | dns.tsinghua.edu.cn | ||||||
| A | 101.4.126.67🇨🇳 CERNET-CN | ||||||
| A | 101.4.126.235🇨🇳 CERNET-CN | ||||||
| A | 166.111.8.30🇨🇳 CERNET-CN | ||||||
| PTR | dns.tsinghua.edu.cn | ||||||
| NS | dns6.edu.cn | ||||||
| A | 2001:dd9::203 🇨🇳 CRIS-CERNET-AS | ||||||
| PTR | ns2.cernet.net | ||||||
| A | 101.4.126.27🇨🇳 CERNET-CN | ||||||
| A | 101.4.126.179🇨🇳 CERNET-CN | ||||||
| A | 103.137.60.203🇨🇳 CRIS-CERNET-AS | ||||||
| PTR | ns2.cernet.net | ||||||
1.in-addr.arpa
| NS | ns1.apnic.net | ||||||
| NS | ns2.apnic.net | ||||||
| NS | rirns.arin.net | ||||||
| NS | ns3.lacnic.net | ||||||
| NS | apnic.authdns.ripe.net | ||||||
AI analysis
Two name servers, dns5.edu.cn and dns6.edu.cn, are delegated to 51.1.in-addr.arpa.
The name server setup of 51.1.in-addr.arpa is identical to that of other domains such as 223.125.in-addr.arpa, 33.210.in-addr.arpa, 203.118.in-addr.arpa, 209.180.in-addr.arpa, and 206.58.in-addr.arpa.
The domain 51.1.in-addr.arpa shares its name servers, at least partially, with other domains such as 0.5.2.0.1.0.0.2.ip6.arpa and 111.166.in-addr.arpa.
The name servers ns2.cernet.net, dns2.tsinghua.edu.cn, and dns.tsinghua.edu.cn are frequently utilized in conjunction with these name servers.
dns5.edu.cn and dns6.edu.cn each point to four IP numbers. For dns5.edu.cn, these are: 2402:f000:1:801::8:30, 101.4.126.67, 101.4.126.235, and 166.111.8.30. For dns6.edu.cn, they are: 2001:dd9::203, 101.4.126.27, 101.4.126.179, and 103.137.60.203.