DNSWHOIS.INFO - 4.21.51.in-addr.arpa
Search for IP or hostnames:
4.21.51.in-addr.arpa checked at 2025-10-29T13:41:48.706Z 299ms 48/48/48 100% R:84.21.51.in-addr.arpa
| NS | ns1-24-eu-north-1.ec2-rdns.amazonaws.com | ||||||
| A | 205.251.196.175🇺🇸 Amazon | ||||||
| PTR | ns-1199.awsdns-21.org | ||||||
| NS | ns2-24-eu-north-1.ec2-rdns.amazonaws.com | ||||||
| A | 205.251.199.159🇺🇸 Amazon | ||||||
| PTR | ns-1951.awsdns-51.co.uk | ||||||
| NS | ns3-24-eu-north-1.ec2-rdns.amazonaws.com | ||||||
| A | 205.251.193.119🇺🇸 Amazon | ||||||
| PTR | ns-375.awsdns-46.com | ||||||
| NS | ns4-24-eu-north-1.ec2-rdns.amazonaws.com | ||||||
| A | 205.251.195.162🇺🇸 Amazon | ||||||
| PTR | ns-930.awsdns-52.net | ||||||
21.51.in-addr.arpa
| NS | ns1-16-eu-north-1.ec2-rdns.amazonaws.com | ||||||
| NS | ns2-16-eu-north-1.ec2-rdns.amazonaws.com | ||||||
| NS | ns3-16-eu-north-1.ec2-rdns.amazonaws.com | ||||||
| NS | ns4-16-eu-north-1.ec2-rdns.amazonaws.com | ||||||
Up
47.4.21.51.in-addr.arpa |
7.4.21.51.in-addr.arpa |
0.4.21.51.in-addr.arpa |
159.4.21.51.in-addr.arpa |
51.4.21.51.in-addr.arpa |
107.4.21.51.in-addr.arpa |
30.4.21.51.in-addr.arpa |
106.4.21.51.in-addr.arpa |
48.4.21.51.in-addr.arpa |
179.4.21.51.in-addr.arpa |
160.4.21.51.in-addr.arpa |
225.4.21.51.in-addr.arpa |
50.4.21.51.in-addr.arpa |
230.4.21.51.in-addr.arpa |
55.4.21.51.in-addr.arpa |
164.4.21.51.in-addr.arpa |
Starts with same word
Starts similarily
AI analysis
4.21.51.in-addr.arpa has children including 47.4.21.51.in-addr.arpa, 7.4.21.51.in-addr.arpa, 0.4.21.51.in-addr.arpa, 159.4.21.51.in-addr.arpa, 51.4.21.51.in-addr.arpa and a few other host names.
4.21.51.in-addr.arpa is delegated to four name servers: ns1-24-eu-north-1.ec2-rdns.amazonaws.com, ns2-24-eu-north-1.ec2-rdns.amazonaws.com, ns3-24-eu-north-1.ec2-rdns.amazonaws.com and ns4-24-eu-north-1.ec2-rdns.amazonaws.com.
At least part of the name servers for 4.21.51.in-addr.arpa are shared with other domains, for instance 173.49.13.in-addr.arpa, 235.21.51.in-addr.arpa, 36.48.13.in-addr.arpa, 26.170.16.in-addr.arpa and 176.16.16.in-addr.arpa.
Host names with one IP: ns1-24-eu-north-1.ec2-rdns.amazonaws.com points to 205.251.196.175; ns2-24-eu-north-1.ec2-rdns.amazonaws.com points to 205.251.199.159; ns3-24-eu-north-1.ec2-rdns.amazonaws.com points to 205.251.193.119; ns4-24-eu-north-1.ec2-rdns.amazonaws.com points to 205.251.195.162.