WWW.RTSAK.COM - 221.2.209.in-addr.arpa
Search for IP or hostnames:
221.2.209.in-addr.arpa checked at 2025-10-19T17:58:58.350Z 322ms 39/39/39 100% R:20221.2.209.in-addr.arpa
| NS | ext-ns1.columbia.edu | ||||||
| A | 128.59.1.1🇺🇸 Columbia University | ||||||
| PTR | ext-ns1.columbia.edu | ||||||
| NS | ext-ns2.columbia.edu | ||||||
| A | 128.59.1.2🇺🇸 Columbia University | ||||||
| PTR | ext-ns2.columbia.edu | ||||||
2.209.in-addr.arpa
| NS | ns10-auth.windstream.net | ||||||
| NS | ns11-auth.windstream.net | ||||||
| NS | ns12-auth.windstream.net | ||||||
| NS | ns9-auth.windstream.net | ||||||
Starts with same word
221.net |
221.es |
221.co |
221.de |
221.in-addr.arpa |
221.tel |
221.com |
221.ru |
221.la |
221.org |
221.co.uk |
221.money |
221.cz |
221.life |
221.com.ua |
221.us |
221.one |
Starts similarily
AI analysis
221.2.209.in-addr.arpa's delegation uses two name servers: ext-ns1.columbia.edu and ext-ns2.columbia.edu.
221.2.209.in-addr.arpa uses the same name server setup as other domains, such as cyan.college.columbia.edu, dyn.columbia.edu, columbiauniversity.info, gutenberg-e.org and 140.10.207.in-addr.arpa.
221.2.209.in-addr.arpa at least partially shares name servers with other domains, including neuro.columbia.edu, med.columbia.edu, gc.cuny.edu, lagcc.cuny.edu and cunyfirst.cuny.edu.
These name servers are commonly used with acme.ucc.cuny.edu, lavinia.cis.cuny.edu, apollo.cs.columbia.edu, ns1.nyp.org, ns2.nyp.org, sundog.ee.columbia.edu, ns10.customer.level3.net, ns15.customer.level3.net, diana.cs.columbia.edu and auth1.dns.cogentco.com.
Host names with a single IP address: ext-ns1.columbia.edu points to 128.59.1.1; ext-ns2.columbia.edu points to 128.59.1.2.