DNSWHOIS.INFO - sdns21.ultradns.org

Search for IP or hostnames:

sdns21.ultradns.org checked at 2025-09-06T01:03:45.310Z 68ms 33/33/33 100% R:8

`sdns21.ultradns.org`

PTR for
`5.1.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.4.0.0.1.1.a.0.0.0.1.6.2.ip6.arpa`
`21.143.154.156.in-addr.arpa`

The name server for domains including tsbbank.ie, broker24.ie, business24.ie, permanenttsb.ie, open24.ie and others is sdns21.ultradns.org.

Commonly, sdns21.ultradns.biz, sdns21.ultradns.com, and ns56.ultradns2.com are used as a name server in conjunction with sdns21.ultradns.org.

sdns21.ultradns.org points to two IP numbers: 2610:a1:1004::15 and 156.154.143.21.

dbq