`51un.net`

DNSSEC	⚠️ Not signed
A	2606:4700:3030::ac43:ba0e^{🇺🇸 Cloudflare2606:4700:3030::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3031::6815:5c24^{🇺🇸 Cloudflare2606:4700:3031::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.92.36^{Cloudflare104.21.80.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.186.14^{🇺🇸 Cloudflare172.67.176.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`coleman.ns.cloudflare.com` ⭐
		A	2606:4700:58::a29f:2c40^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`coleman.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c340^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`coleman.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2340^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`coleman.ns.cloudflare.com`
		A	108.162.195.64^{🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`coleman.ns.cloudflare.com`
		A	162.159.44.64^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`coleman.ns.cloudflare.com`
		A	172.64.35.64^{🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`coleman.ns.cloudflare.com`
NS	`hattie.ns.cloudflare.com`
		A	2606:4700:50::a29f:26ac^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`hattie.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c2ac^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`hattie.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:22ac^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`hattie.ns.cloudflare.com`
		A	108.162.194.172^{🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`hattie.ns.cloudflare.com`
		A	162.159.38.172^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`hattie.ns.cloudflare.com`
		A	172.64.34.172^{🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`hattie.ns.cloudflare.com`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4	104.21.92.36, 172.67.186.14
		IPv6	2606:4700:3030::ac43:ba0e, 2606:4700:3031::6815:5c24
SOA	`coleman.ns.cloudflare.com`dns@cloudflare.com serial=2395937201

`net`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a.gtld-servers.net` ⭐
	NS	`b.gtld-servers.net`
	NS	`c.gtld-servers.net`
	NS	`d.gtld-servers.net`
	NS	`e.gtld-servers.net`
	NS	`f.gtld-servers.net`
	NS	`g.gtld-servers.net`
	NS	`h.gtld-servers.net`
	NS	`i.gtld-servers.net`
	NS	`j.gtld-servers.net`
	NS	`k.gtld-servers.net`
	NS	`l.gtld-servers.net`
	NS	`m.gtld-servers.net`
	SOA	`a.gtld-servers.net`nstld@verisign-grs.com serial=1771291465

Same first word

51un.com

51un.net

Similar names

nu15.cn

nu51.com

u15n.com

n51u.com

nu15.com

DNS History

19 records (6 active, 13 former)

○NSbecky.ns.cloudflare.com2026-03-12 → 2026-03-12 · 1 obs

○ 2026-03-12 08:35:14

○NSchuck.ns.cloudflare.com2026-03-12 → 2026-03-12 · 1 obs

○ 2026-03-12 08:35:14

●NScoleman.ns.cloudflare.com2026-03-12 → 2026-03-12 · 2 obs

○ 2016-01-03 22:35:50
● 2026-03-12 08:35:14

●NShattie.ns.cloudflare.com2026-03-12 → 2026-03-12 · 2 obs

○ 2016-01-03 22:35:50
● 2026-03-12 08:35:14

○NSns.cdnhost.cn2015-06-09 → 2016-01-03 · 4 obs

○ 2007-09-21 18:26:22
● 2015-06-09 02:37:22
● 2016-01-03 22:35:50
○ 2026-03-12 08:35:14

○NSns.dnsfamily.com2015-06-09 → 2016-01-03 · 4 obs

○ 2007-09-21 18:26:22
● 2015-06-09 02:37:22
● 2016-01-03 22:35:50
○ 2026-03-12 08:35:14

○NSns1.dnsfamily.com2007-09-21 → 2007-09-21 · 3 obs

● 2007-09-21 18:26:22
○ 2015-06-09 02:37:22
○ 2026-03-12 08:35:14

○NSns2.dnsfamily.com2007-09-21 → 2007-09-21 · 3 obs

● 2007-09-21 18:26:22
○ 2015-06-09 02:37:22
○ 2026-03-12 08:35:14

○MXmail.51un.net2007-09-21 → 2007-09-21 · 3 obs

● 2007-09-21 18:26:22
○ 2015-06-09 02:37:22
○ 2026-03-12 08:35:14

○MXmail.skrimple.com2016-04-04 → 2016-12-27 · 4 obs

○ 2015-06-09 02:37:22
● 2016-04-04 03:41:04
● 2016-12-27 12:48:00
○ 2026-03-12 08:35:14

○A103.51.144.812016-06-28 → 2016-12-27 · 5 obs

○ 2016-04-04 03:41:04
● 2016-06-28 02:57:18
● 2016-12-27 12:48:00
○ 2017-11-28 15:14:52
○ 2026-03-12 08:35:14

●A104.21.92.362026-03-12 → 2026-03-12 · 2 obs

○ 2017-11-28 15:14:52
● 2026-03-12 08:35:14

○A122.112.78.72015-06-09 → 2016-01-03 · 5 obs

○ 2007-09-21 18:26:22
● 2015-06-09 02:37:22
● 2016-01-03 22:35:50
○ 2016-04-04 03:41:04
○ 2026-03-12 08:35:14

○A125.65.112.892007-09-21 → 2007-09-21 · 3 obs

● 2007-09-21 18:26:22
○ 2015-06-09 02:37:22
○ 2026-03-12 08:35:14

●A172.67.186.142026-03-12 → 2026-03-12 · 2 obs

○ 2017-11-28 15:14:52
● 2026-03-12 08:35:14

●A2606:4700:3030::ac43:ba0e2026-03-12 → 2026-03-12 · 2 obs

○ 2017-11-28 15:14:52
● 2026-03-12 08:35:14

●A2606:4700:3031::6815:5c242026-03-12 → 2026-03-12 · 2 obs

○ 2017-11-28 15:14:52
● 2026-03-12 08:35:14

○A43.249.26.892017-11-28 → 2017-11-28 · 3 obs

○ 2016-12-27 12:48:00
● 2017-11-28 15:14:52
○ 2026-03-12 08:35:14

○A65.19.157.2352016-04-04 → 2016-04-04 · 4 obs

○ 2016-01-03 22:35:50
● 2016-04-04 03:41:04
○ 2016-06-28 02:57:18
○ 2026-03-12 08:35:14

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
net	d.gtld-servers.net, l.gtld-servers.net, j.gtld-servers.net, a.gtld-servers.net...	-
51un.net	hattie.ns.cloudflare.com, coleman.ns.cloudflare.com	-

✅ Authoritative Response

Server: 172.64.35.64

NS records: hattie.ns.cloudflare.com, coleman.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for 51un.net (unsigned zone)

⏱️ Timing

Total: 329ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`104.21.92.36, 172.67.186.14`
AAAA	2	`2606:4700:3031::6815:5c24, 2606:4700:3030::ac43:ba0e`
NS	2	`coleman.ns.cloudflare.com, hattie.ns.cloudflare.com`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`coleman.ns.cloudflare.com dns.cloudflare`

Analysis

IP Addresses

51un.net points to four IP numbers: 2606:4700:3030::ac43:ba0e, 2606:4700:3031::6815:5c24, 104.21.92.36 and 172.67.186.14.

Other host names, for instance dnnmart.com, footshop.si, collegeofmatrons.org.uk, size72.net and helpmannacademy.com share IP numbers with 51un.net.

Name Servers

51un.net's delegation is to two name servers coleman.ns.cloudflare.com and hattie.ns.cloudflare.com.

51un.net shares the same name server configuration as other domains, such as 0370ty.com, hfckfj.com, botrun.net, 672273.com and huiyaoba.com.

51un.net at least partially shares its name servers with other domains, for instance goweiyu.com, yumono.com, ylxljy.cn, mrwiseowl.com and cataract-lasikclinic.com.

These name servers are commonly used alongside jakub.ns.cloudflare.com and meadow.ns.cloudflare.com.

Host names with six IP numbers:

coleman.ns.cloudflare.com points to: 2606:4700:58::a29f:2c40, 2803:f800:50::6ca2:c340, 2a06:98c1:50::ac40:2340, 108.162.195.64, 162.159.44.64 and 172.64.35.64.

hattie.ns.cloudflare.com points to: 2606:4700:50::a29f:26ac, 2803:f800:50::6ca2:c2ac, 2a06:98c1:50::ac40:22ac, 108.162.194.172, 162.159.38.172 and 172.64.34.172.

51un.net - robtex.com

51un.net

net

Same first word

Similar names

DNS History

🔍 DNS Trace

📋 Delegation Chain

✅ Authoritative Response

🔒 DNSSEC Status

⏱️ Timing

📄 Records

Analysis

IP Addresses

Name Servers

`51un.net`

`net`