u4b.mx - robtex.com

u4b.mx

DNSSEC⚠️ Not signed
NSedns126.ultradns.com ⭐ ⚠️ Not in parent delegation
A2001:502:f3ff::27e🇺🇸 MAINT-ID-120082001:502:f3ff::/48 Neustar
PTRedns126.ultradns.com
A204.74.66.126🇺🇸 MAINT-ID-12008204.74.66.0/24 Neustar
PTRedns126.ultradns.com
NSedns126.ultradns.biz ⚠️ Not in parent delegation
A2610:a1:1015::27e🇺🇸 MAINT-ID-120082610:a1:1015::/48 Neustar
PTRedns126.ultradns.biz
A204.74.67.126🇺🇸 MAINT-ID-12008204.74.67.0/24 Neustar
PTRedns126.ultradns.biz
NSedns126.ultradns.net ⚠️ Not in parent delegation
A2610:a1:1014::27e🇺🇸 MAINT-ID-120082610:a1:1014::/48 Neustar
PTRedns126.ultradns.net
A204.74.110.126🇺🇸 MAINT-ID-12008204.74.110.0/24 Neustar
PTRedns126.ultradns.net
NSedns126.ultradns.org ⚠️ Not in parent delegation
A2001:502:4612::27e🇺🇸 MAINT-ID-120082001:502:4612::/48 Neustar
PTRedns126.ultradns.org
A204.74.111.126🇺🇸 MAINT-ID-12008204.74.111.0/24 Neustar
PTRedns126.ultradns.org
NSpdns80.ultradns.biz ⚠️ Not in zone NS records
A2610:a1:1015::74🇺🇸 MAINT-ID-120082610:a1:1015::/48 Neustar
PTRpdns80.ultradns.biz
A156.154.66.80🇺🇸 MAINT-ID-12008156.154.66.0/24 Neustar
PTRpdns80.ultradns.biz
NSpdns80.ultradns.com ⚠️ Not in zone NS records
A2001:502:f3ff::74🇺🇸 MAINT-ID-120082001:502:f3ff::/48 Neustar
PTRpdns80.ultradns.com
A156.154.64.80🇺🇸 MAINT-ID-12008156.154.64.0/24 Neustar
PTRpdns80.ultradns.com
NSpdns80.ultradns.net ⚠️ Not in zone NS records
A2610:a1:1014::74🇺🇸 MAINT-ID-120082610:a1:1014::/48 Neustar
PTRpdns80.ultradns.net
A156.154.65.80🇺🇸 MAINT-ID-12008156.154.65.0/24 Neustar
PTRpdns80.ultradns.net
NSpdns80.ultradns.org ⚠️ Not in zone NS records
A2001:502:4612::74🇺🇸 MAINT-ID-120082001:502:4612::/48 Neustar
PTRpdns80.ultradns.org
A156.154.67.80🇺🇸 MAINT-ID-12008156.154.67.0/24 Neustar
PTRpdns80.ultradns.org
SOAedns126.ultradns.comserviceproviders@uber.com 2021-06-09 #1

mx

DNSSEC🔒 Signed (DS record present)
NSm.mx-ns.mx ⭐
NSc.mx-ns.mx
NSe.mx-ns.mx
NSi.mx-ns.mx
NSo.mx-ns.mx
NSx.mx-ns.mx
TXTv=spf1 -all
SOAm.mx-ns.mxhostmaster@nic.mx serial=1774391649

Same first word

u4b.jp
u4b.de
u4b.at
u4b.ru
u4b.mobi
u4b.mx
u4b.com.br
u4b.com

Similar names

4ub.cn
b4u.biz
bu4.com
b4u.de
b4u.us
b4u.nl
ub4.xyz
bu4.ru
4bu.com
4ub.co
ub4.org
4ub.cc
b4u.cc
b4u.cn
ub4.ws
ub4.com.br
4ub.com
bu4.de
b4u.org
b4u.live
4bu.com.au
b4u.net.au
bu4.com.cn
b4u.it
b4u.online
b4u.me
4bu.de
b4u.es
4bu.org
ub4.de
4bu.net
bu4.top
b4u.be
b4u.ie
b4u.fr
b4u.eu
b4u.pt
4ub.de
b4u.co.il
4ub.it
ub4.me
b4u.at
b4u.com
b4u.co
b4u.mobi
4bu.cn
bu4.cn
b4u.co.uk
b4u.sakura.ne.jp
ub4.co.uk
b4u.ch
4bu.ru
4bu.eu
ub4.eu
b4u.net
bu4.org
4ub.net
b4u.cz
ub4.com

DNS History

8 records (8 active, 0 former)

NSedns126.ultradns.bizedns126.ultradns.comedns126.ultradns.netedns126.ultradns.orgpdns80.ultradns.bizpdns80.ultradns.compdns80.ultradns.netpdns80.ultradns.org
●NSedns126.ultradns.biz2026-03-14 → 2026-03-24 · 2 obs
● 2026-03-14 17:43:48
● 2026-03-24 22:43:20
●NSedns126.ultradns.com2026-03-14 → 2026-03-24 · 2 obs
● 2026-03-14 17:43:48
● 2026-03-24 22:43:20
●NSedns126.ultradns.net2026-03-14 → 2026-03-24 · 2 obs
● 2026-03-14 17:43:48
● 2026-03-24 22:43:20
●NSedns126.ultradns.org2026-03-14 → 2026-03-24 · 2 obs
● 2026-03-14 17:43:48
● 2026-03-24 22:43:20
●NSpdns80.ultradns.biz2026-03-14 → 2026-03-24 · 2 obs
● 2026-03-14 17:43:48
● 2026-03-24 22:43:20
●NSpdns80.ultradns.com2026-03-14 → 2026-03-24 · 2 obs
● 2026-03-14 17:43:48
● 2026-03-24 22:43:20
●NSpdns80.ultradns.net2026-03-14 → 2026-03-24 · 2 obs
● 2026-03-14 17:43:48
● 2026-03-24 22:43:20
●NSpdns80.ultradns.org2026-03-14 → 2026-03-24 · 2 obs
● 2026-03-14 17:43:48
● 2026-03-24 22:43:20

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
mxx.mx-ns.mx, o.mx-ns.mx, m.mx-ns.mx, c.mx-ns.mx...12 records
u4b.mxpdns80.ultradns.biz, pdns80.ultradns.net, pdns80.ultradns.com, pdns80.ultradns.org-

✅ Authoritative Response

Server:156.154.65.80

NS records: pdns80.ultradns.biz, pdns80.ultradns.net, pdns80.ultradns.com, pdns80.ultradns.org

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for u4b.mx (unsigned zone)

⏱️ Timing

Total: 924ms | Queries: -

📄 Records

TypeCountSample Data
NS4edns126.ultradns.biz, edns126.ultradns.com...
SOA1edns126.ultradns.com serviceproviders.ub

📌 Glue Records Collected

Total: 12

In-bailiwick: 12 (x.mx-ns.mx, o.mx-ns.mx, m.mx-ns.mx...)

Analysis

Name Servers

Eight name servers are delegated to u4b.mx: edns126.ultradns.biz, pdns80.ultradns.biz, edns126.ultradns.com, pdns80.ultradns.com, edns126.ultradns.net, pdns80.ultradns.net, edns126.ultradns.org and pdns80.ultradns.org.

u4b.mx at least partially shares name servers with other domains such as uberclinic.com, demo.vontik.com, ubertrucking.com, uber-atg.com and mybeckman.in.

These name servers are commonly used with dns1.p04.nsone.net, dns2.p04.nsone.net, dns3.p04.nsone.net and dns4.p04.nsone.net.

Host names with two IP numbers:

edns126.ultradns.biz points to: 2610:a1:1015::27e and 204.74.67.126.

pdns80.ultradns.biz points to: 2610:a1:1015::74 and 156.154.66.80.

edns126.ultradns.com points to: 2001:502:f3ff::27e and 204.74.66.126.

pdns80.ultradns.com points to: 2001:502:f3ff::74 and 156.154.64.80.

edns126.ultradns.net points to: 2610:a1:1014::27e and 204.74.110.126.

pdns80.ultradns.net points to: 2610:a1:1014::74 and 156.154.65.80.

edns126.ultradns.org points to: 2001:502:4612::27e and 204.74.111.126.

pdns80.ultradns.org points to: 2001:502:4612::74 and 156.154.67.80.