`librarian.uu.org`

DNSSEC	⚠️ Not signed
A	192.251.226.254^{🇩🇪 AS4830org192.251.226.0/24 4830.org e. V.}
		PTR	`librarian.uu.org`

`uu.org`

	DNSSEC	⚠️ Not signed
	A	2a06:e881:2604:42:0:c1ff:fe1a:78db^{🇨🇭 WUSEL-AS2a06:e881:2604::/48 DC HAM}
	A	193.26.120.219^{🇩🇪 WUSEL-AS193.26.120.0/24 Kai Siering}
	NS	`librarian.uu.org` ⭐
	NS	`dns-fks.uu.org`
	NS	`dns-gut.4830.org` ⚠️ Not in parent delegation
	NS	`weyoun3.cord.de` ⚠️ Not in parent delegation
	MX	`mx.uu.org` ⭐
	MX	`mx-tng.uu.org`⁽⁶⁾
	MX	`mx-legacy.uu.org`⁽¹⁰⁾
	TXT	`v=spf1 mx a:mail.uu.org a:death.uu.org a:mx.uu.org a:famine.uu.org a:tmpmail....`
	SOA	`librarian.uu.org`librarian@uu.org 2026-01-19 #2

WOT: SAFE (62/100)
📈 Tranco rank: #314,784

PTR for

254.226.251.192.in-addr.arpa

18.120.26.193.in-addr.arpa

NS for

nhz-suedring.de

as206946.net

uu.org

120.26.193.in-addr.arpa

0xdecafbad.net

sietland.net

freifunk.xyz

Previously NS for

guetersloh.freifunk.net

4830.org

blogdoch.net

226.251.192.in-addr.arpa

Same first word

Similar names

brianlair.com

DNS History

6 records (1 active, 5 former)

○MXfamine.uu.org2015-08-03 → 2026-02-16 · 4 obs

● 2015-08-03 17:21:58
● 2026-02-16 13:53:12
○ 2026-02-18 14:24:44
○ 2026-05-14 14:08:04

○MXmail.uu.org2015-08-03 → 2016-03-20 · 4 obs

● 2015-08-03 17:21:58
● 2016-03-20 21:51:08
○ 2016-03-28 08:57:00
○ 2026-05-14 14:08:04

○MXmx.uu.org2016-03-28 → 2026-02-16 · 5 obs

○ 2016-03-20 21:51:08
● 2016-03-28 08:57:00
● 2026-02-16 13:53:12
○ 2026-02-18 14:24:44
○ 2026-05-14 14:08:04

●A192.251.226.2542015-08-03 → 2026-05-14 · 2 obs

● 2015-08-03 17:21:58
● 2026-05-14 14:08:04

○A193.26.120.182015-08-03 → 2020-05-20 · 4 obs

● 2015-08-03 17:21:58
● 2020-05-20 13:22:58
○ 2026-02-16 13:53:12
○ 2026-05-14 14:08:04

○A2a06:e881:1700:1:5054:ff:fe42:aa9a2020-05-20 → 2020-05-20 · 4 obs

○ 2015-08-03 17:21:58
● 2020-05-20 13:22:58
○ 2026-02-16 13:53:12
○ 2026-05-14 14:08:04

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
org	b2.org.afilias-nst.org, d0.org.afilias-nst.org, b0.org.afilias-nst.org	-
uu.org	dns-fks.uu.org, dns-gut.4830.org, weyoun3.cord.de, librarian.uu.org	7 records

✅ Authoritative Response

Server:192.251.226.254

NS records: dns-fks.uu.org, dns-gut.4830.org, weyoun3.cord.de, librarian.uu.org

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for uu.org (unsigned zone)

⏱️ Timing

Total: 349ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`192.251.226.254`

📌 Glue Records Collected

Total: 7

In-bailiwick: 5 (dns-fks.uu.org, dns-fks.uu.org, librarian.uu.org...)

Out-of-bailiwick: 2 (dns-gut.4830.org, dns-gut.4830.org)

Analysis

Name Server Role

librarian.uu.org serves as a name server for the domains nhz-suedring.de, as206946.net, uu.org, 120.26.193.in-addr.arpa and 0xdecafbad.net, along with a few other domains.

dns-gut.4830.org, dns-fks.uu.org and weyoun3.cord.de commonly serve as name servers together with librarian.uu.org.

IP Addresses

librarian.uu.org resolves to one IP number: 192.251.226.254.

librarian.uu.org - robtex.com

librarian.uu.org

uu.org