u4b.mx - dns.ninja

`u4b.mx`

DNSSEC	⚠️ Not signed
NS	`edns126.ultradns.com` ⭐ ⚠️ Not in parent delegation
		A	2001:502:f3ff::27e^{🇺🇸 MAINT-ID-120082001:502:f3ff::/48 Neustar}
			PTR	`edns126.ultradns.com`
		A	204.74.66.126^{🇺🇸 MAINT-ID-12008204.74.66.0/24 Neustar}
			PTR	`edns126.ultradns.com`
NS	`edns126.ultradns.biz` ⚠️ Not in parent delegation
		A	2610:a1:1015::27e^{🇺🇸 MAINT-ID-120082610:a1:1015::/48 Neustar}
			PTR	`edns126.ultradns.biz`
		A	204.74.67.126^{🇺🇸 MAINT-ID-12008204.74.67.0/24 Neustar}
			PTR	`edns126.ultradns.biz`
NS	`edns126.ultradns.net` ⚠️ Not in parent delegation
		A	2610:a1:1014::27e^{🇺🇸 MAINT-ID-120082610:a1:1014::/48 Neustar}
			PTR	`edns126.ultradns.net`
		A	204.74.110.126^{🇺🇸 MAINT-ID-12008204.74.110.0/24 Neustar}
			PTR	`edns126.ultradns.net`
NS	`edns126.ultradns.org` ⚠️ Not in parent delegation
		A	2001:502:4612::27e^{🇺🇸 MAINT-ID-120082001:502:4612::/48 Neustar}
			PTR	`edns126.ultradns.org`
		A	204.74.111.126^{🇺🇸 MAINT-ID-12008204.74.111.0/24 Neustar}
			PTR	`edns126.ultradns.org`
NS	`pdns80.ultradns.biz` ⚠️ Not in zone NS records
		A	2610:a1:1015::74^{🇺🇸 MAINT-ID-120082610:a1:1015::/48 Neustar}
			PTR	`pdns80.ultradns.biz`
		A	156.154.66.80^{🇺🇸 MAINT-ID-12008156.154.66.0/24 Neustar}
			PTR	`pdns80.ultradns.biz`
NS	`pdns80.ultradns.com` ⚠️ Not in zone NS records
		A	2001:502:f3ff::74^{🇺🇸 MAINT-ID-120082001:502:f3ff::/48 Neustar}
			PTR	`pdns80.ultradns.com`
		A	156.154.64.80^{🇺🇸 MAINT-ID-12008156.154.64.0/24 Neustar}
			PTR	`pdns80.ultradns.com`
NS	`pdns80.ultradns.net` ⚠️ Not in zone NS records
		A	2610:a1:1014::74^{🇺🇸 MAINT-ID-120082610:a1:1014::/48 Neustar}
			PTR	`pdns80.ultradns.net`
		A	156.154.65.80^{🇺🇸 MAINT-ID-12008156.154.65.0/24 Neustar}
			PTR	`pdns80.ultradns.net`
NS	`pdns80.ultradns.org` ⚠️ Not in zone NS records
		A	2001:502:4612::74^{🇺🇸 MAINT-ID-120082001:502:4612::/48 Neustar}
			PTR	`pdns80.ultradns.org`
		A	156.154.67.80^{🇺🇸 MAINT-ID-12008156.154.67.0/24 Neustar}
			PTR	`pdns80.ultradns.org`
SOA	`edns126.ultradns.com`serviceproviders@uber.com 2021-06-09 #1

`mx`

	DNSSEC	🔒 Signed (DS record present)
	NS	`m.mx-ns.mx` ⭐
	NS	`c.mx-ns.mx`
	NS	`e.mx-ns.mx`
	NS	`i.mx-ns.mx`
	NS	`o.mx-ns.mx`
	NS	`x.mx-ns.mx`
	TXT	`v=spf1 -all`
	SOA	`m.mx-ns.mx`hostmaster@nic.mx serial=1785661708

Same first word

u4b.jp

u4b.de

u4b.co.uk

u4b.at

u4b.ru

u4b.mobi

u4b.mx

u4b.com.br

u4b.com

Similar names

4ub.cn

b4u.biz

bu4.com

b4u.ai

b4u.de

b4u.us

b4u.nl

ub4.xyz

bu4.ru

4bu.com

ub4.net

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

b4u.be

b4u.ie

b4u.fr

b4u.asia

b4u.eu

b4u.pt

4ub.de

b4u.co.il

4ub.it

4ub.ru

ub4.me

bu4.casino

b4u.at

b4u.com

b4u.co

b4u.xyz

b4u.mobi

ub4.ro

4bu.cn

bu4.cn

b4u.co.uk

b4u.sakura.ne.jp

b4u.ca

ub4.co.uk

b4u.ch

4bu.ru

4bu.eu

b4u.co.kr

ub4.eu

b4u.net

bu4.org

4ub.net

b4u.cz

ub4.com

DNS History

8 records (8 active, 0 former)

●NSedns126.ultradns.biz2026-03-14 → 2026-08-02 · 2 obs

● 2026-03-14 17:43:48
● 2026-08-02 09:31:28

●NSedns126.ultradns.com2026-03-14 → 2026-08-02 · 2 obs

● 2026-03-14 17:43:48
● 2026-08-02 09:31:28

●NSedns126.ultradns.net2026-03-14 → 2026-08-02 · 2 obs

● 2026-03-14 17:43:48
● 2026-08-02 09:31:28

●NSedns126.ultradns.org2026-03-14 → 2026-08-02 · 2 obs

● 2026-03-14 17:43:48
● 2026-08-02 09:31:28

●NSpdns80.ultradns.biz2026-03-14 → 2026-08-02 · 2 obs

● 2026-03-14 17:43:48
● 2026-08-02 09:31:28

●NSpdns80.ultradns.com2026-03-14 → 2026-08-02 · 2 obs

● 2026-03-14 17:43:48
● 2026-08-02 09:31:28

●NSpdns80.ultradns.net2026-03-14 → 2026-08-02 · 2 obs

● 2026-03-14 17:43:48
● 2026-08-02 09:31:28

●NSpdns80.ultradns.org2026-03-14 → 2026-08-02 · 2 obs

● 2026-03-14 17:43:48
● 2026-08-02 09:31:28

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
mx	o.mx-ns.mx, m.mx-ns.mx, i.mx-ns.mx, c.mx-ns.mx...	-
u4b.mx	pdns80.ultradns.biz, pdns80.ultradns.com, pdns80.ultradns.net, pdns80.ultradns.org	-

✅ Authoritative Response

Server:156.154.67.80

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

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for u4b.mx (unsigned zone)

⏱️ Timing

Total: 544ms | Queries: -

📄 Records

Type	Count	Sample Data
NS	4	`edns126.ultradns.biz, edns126.ultradns.com...`
SOA	1	`edns126.ultradns.com serviceproviders.ub`

Analysis

Name Servers

u4b.mx is served by 8 authoritative name servers — among them edns126.ultradns.biz, pdns80.ultradns.biz, edns126.ultradns.com and 5 others.

There is at least partial name server overlap between u4b.mx and other domains — uberclinic.com, demo.vontik.com, ubertrucking.com and two more among them.

These name servers regularly appear alongside edns126.ultradns.net, edns126.ultradns.org, pdns80.ultradns.com and 7 other name servers in NS record sets.

Hostnames that resolve to two IP addresses:

edns126.ultradns.biz resolves to two addresses: 204.74.67.126 and 2610:a1:1015::27e.

pdns80.ultradns.biz resolves to two addresses: 156.154.66.80 and 2610:a1:1015::74.

edns126.ultradns.com resolves to two addresses: 204.74.66.126 and 2001:502:f3ff::27e.

pdns80.ultradns.com resolves to two addresses: 156.154.64.80 and 2001:502:f3ff::74.

edns126.ultradns.net resolves to two addresses: 204.74.110.126 and 2610:a1:1014::27e.

pdns80.ultradns.net resolves to two addresses: 156.154.65.80 and 2610:a1:1014::74.

edns126.ultradns.org resolves to two addresses: 204.74.111.126 and 2001:502:4612::27e.

pdns80.ultradns.org resolves to two addresses: 156.154.67.80 and 2001:502:4612::74.