`c3.hk`

DNSSEC	⚠️ Not signed
A	2606:4700:3032::ac43:dddd^{🇺🇸 Cloudflare2606:4700:3032::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3033::6815:3e51^{🇺🇸 Cloudflare2606:4700:3033::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.62.81^{Cloudflare104.21.48.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.221.221^{🇺🇸 Cloudflare172.67.208.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`nancy.ns.cloudflare.com` ⭐
		A	2606:4700:50::a29f:2654^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`nancy.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c254^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`nancy.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2254^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`nancy.ns.cloudflare.com`
		A	108.162.194.84^{🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`nancy.ns.cloudflare.com`
		A	162.159.38.84^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`nancy.ns.cloudflare.com`
		A	172.64.34.84^{🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`nancy.ns.cloudflare.com`
NS	`piers.ns.cloudflare.com`
		A	2606:4700:58::a29f:2c10^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`piers.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c310^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`piers.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2310^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`piers.ns.cloudflare.com`
		A	108.162.195.16^{🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`piers.ns.cloudflare.com`
		A	162.159.44.16^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`piers.ns.cloudflare.com`
		A	172.64.35.16^{🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`piers.ns.cloudflare.com`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.62.81, 172.67.221.221
		IPv6 hints	2606:4700:3032::ac43:dddd, 2606:4700:3033::6815:3e51
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=53, name=cloudflare-ech.com
SOA	`nancy.ns.cloudflare.com`dns@cloudflare.com serial=2410017511

`hk`

	DNSSEC	🔒 Signed (DS record present)
	NS	`ns3.hkirc.net.hk` ⭐
	NS	`c.hkirc.net.hk`
	NS	`d.hkirc.net.hk`
	NS	`m.hkirc.net.hk`
	NS	`t.hkirc.net.hk`
	NS	`u.hkirc.net.hk`
	NS	`v.hkirc.net.hk`
	NS	`x.hkirc.net.hk`
	NS	`y.hkirc.net.hk`
	NS	`z.hkirc.net.hk`
	SOA	`ns3.hkirc.net.hk`hostmaster@hkirc.net.hk serial=2074975628

Same first word

c3.be

c3.ru

c3.ie

c3.pl

c3.la

c3.sg

c3.com.sg

c3.fyi

c3.hk

c3.fi

c3.srv.br

c3.ai

c3.kiev.ua

c3.lv

c3.co.uk

c3.cl

c3.de

c3.com.br

c3.to

c3.com.au

c3.com.tw

c3.kz

c3.co.nz

c3.co

c3.dk

c3.gov.ua

c3.network

c3.care

c3.sk

c3.ca

c3.org.nz

c3.co.za

c3.servegame.com

c3.ag

c3.se

c3.aw

c3.church

c3.myqnapcloud.com

c3.ro

c3.ventures

c3.chat

c3.cw

c3.ind.br

c3.business

c3.nyc

c3.nl

c3.lt

c3.agency

c3.ky

c3.com

c3.hu

c3.net

c3.vc

c3.org.br

c3.eu

c3.tv

c3.cc

c3.ee

c3.coffee

c3.io

c3.net.pl

c3.cx

c3.no

c3.cm

c3.toys

c3.design

c3.live

c3.fr

c3.cn

Similar names

3c.de

3c.sk

3c.hu

3c.su

3c.com.hk

3c.uk

3c.no

3c.dk

3c.vc

3c.design

3c.net

3c.group

3c.ca

3c.network

3c.edu.vn

3c.ie

3c.la

3c.com.au

3c.plus

3c.ma

3c.casino

3c.cn

3c.lt

3c.org

3c.re

3c.co.za

3c.exchange

3c.com.vn

3c.ru

3c.se

3c.co.ma

3c.pt

3c.game

3c.life

3c.gz.cn

3c.com.tw

3c.ph

3c.com.tr

3c.kz

3c.cl

3c.ee

3c.pl

3c.cm

3c.by

3c.in.th

3c.co.th

3c.ro

3c.co.uk

3c.com

3c.be

3c.hk

3c.lv

3c.eu

3c.wiki

3c.ai

3c.biz

3c.fr

3c.cz

3c.org.br

3c.sa

3c.solutions

3c.com.pl

3c.com.pe

DNS History

21 records (6 active, 15 former)

○NSdns1.domain.net.hk2021-09-16 → 2021-09-16 · 4 obs

○ 2016-04-14 01:04:52
● 2021-09-16 00:33:46
○ 2026-07-01 14:02:56
○ 2026-07-31 19:53:00

○NSdns2.domain.net.hk2021-09-16 → 2021-09-16 · 4 obs

○ 2016-04-14 01:04:52
● 2021-09-16 00:33:46
○ 2026-07-01 14:02:56
○ 2026-07-31 19:53:00

●NSnancy.ns.cloudflare.com2026-07-01 → 2026-07-31 · 3 obs

○ 2021-09-16 00:33:46
● 2026-07-01 14:02:56
● 2026-07-31 19:53:00

○NSns1.myhostadmin.net2015-11-21 → 2016-04-14 · 4 obs

● 2015-11-21 20:05:12
● 2016-04-14 01:04:52
○ 2021-09-16 00:33:46
○ 2026-07-31 19:53:00

○NSns2.myhostadmin.net2015-11-21 → 2016-04-14 · 4 obs

● 2015-11-21 20:05:12
● 2016-04-14 01:04:52
○ 2021-09-16 00:33:46
○ 2026-07-31 19:53:00

○NSns3.myhostadmin.net2015-11-21 → 2016-04-14 · 4 obs

● 2015-11-21 20:05:12
● 2016-04-14 01:04:52
○ 2021-09-16 00:33:46
○ 2026-07-31 19:53:00

○NSns4.myhostadmin.net2015-11-21 → 2016-04-14 · 4 obs

● 2015-11-21 20:05:12
● 2016-04-14 01:04:52
○ 2021-09-16 00:33:46
○ 2026-07-31 19:53:00

○NSns5.myhostadmin.net2015-11-21 → 2016-04-14 · 4 obs

● 2015-11-21 20:05:12
● 2016-04-14 01:04:52
○ 2021-09-16 00:33:46
○ 2026-07-31 19:53:00

○NSns6.myhostadmin.net2015-11-21 → 2016-04-14 · 4 obs

● 2015-11-21 20:05:12
● 2016-04-14 01:04:52
○ 2021-09-16 00:33:46
○ 2026-07-31 19:53:00

●NSpiers.ns.cloudflare.com2026-07-01 → 2026-07-31 · 3 obs

○ 2021-09-16 00:33:46
● 2026-07-01 14:02:56
● 2026-07-31 19:53:00

○MXmail.c3.hk2021-09-16 → 2021-09-16 · 3 obs

● 2021-09-16 00:33:46
○ 2026-07-01 14:02:56
○ 2026-07-31 19:53:00

●A104.21.62.812026-07-01 → 2026-07-31 · 3 obs

○ 2021-09-16 00:33:46
● 2026-07-01 14:02:56
● 2026-07-31 19:53:00

○A137.220.233.1182021-09-16 → 2021-09-16 · 4 obs

○ 2016-04-14 01:04:52
● 2021-09-16 00:33:46
○ 2026-07-01 14:02:56
○ 2026-07-31 19:53:00

●A172.67.221.2212026-07-01 → 2026-07-31 · 3 obs

○ 2021-09-16 00:33:46
● 2026-07-01 14:02:56
● 2026-07-31 19:53:00

○A173.254.227.82015-11-21 → 2015-12-28 · 5 obs

○ 2015-07-16 12:22:34
● 2015-11-21 20:05:12
● 2015-12-28 18:05:28
○ 2016-04-14 01:04:52
○ 2026-07-31 19:53:00

○A23.234.27.1002016-04-14 → 2016-04-14 · 4 obs

○ 2015-12-28 18:05:28
● 2016-04-14 01:04:52
○ 2021-09-16 00:33:46
○ 2026-07-31 19:53:00

○A23.27.192.1152015-07-16 → 2015-07-16 · 3 obs

● 2015-07-16 12:22:34
○ 2015-11-21 20:05:12
○ 2026-07-31 19:53:00

●A2606:4700:3032::ac43:dddd2026-07-01 → 2026-07-31 · 3 obs

○ 2021-09-16 00:33:46
● 2026-07-01 14:02:56
● 2026-07-31 19:53:00

●A2606:4700:3033::6815:3e512026-07-01 → 2026-07-31 · 3 obs

○ 2021-09-16 00:33:46
● 2026-07-01 14:02:56
● 2026-07-31 19:53:00

○CNAMEfreeurl.abc188.com2016-04-14 → 2016-04-14 · 4 obs

○ 2015-11-21 20:05:12
● 2016-04-14 01:04:52
○ 2021-09-16 00:33:46
○ 2026-07-31 19:53:00

○CNAMEfreeurl.vhostgo.com2015-11-21 → 2016-04-14 · 4 obs

● 2015-11-21 20:05:12
● 2016-04-14 01:04:52
○ 2021-09-16 00:33:46
○ 2026-07-31 19:53:00

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
hk	c.hkirc.net.hk, d.hkirc.net.hk, m.hkirc.net.hk, t.hkirc.net.hk...	15 records
c3.hk	nancy.ns.cloudflare.com, piers.ns.cloudflare.com	-

✅ Authoritative Response

Server:108.162.195.16

NS records: nancy.ns.cloudflare.com, piers.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for c3.hk (unsigned zone)

⏱️ Timing

Total: 1037ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`172.67.221.221, 104.21.62.81`
AAAA	2	`2606:4700:3033::6815:3e51, 2606:4700:3032::ac43:dddd`
NS	2	`nancy.ns.cloudflare.com, piers.ns.cloudflare.com`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`nancy.ns.cloudflare.com dns.cloudflare.c`

📌 Glue Records Collected

Total: 15

In-bailiwick: 15 (c.hkirc.net.hk, d.hkirc.net.hk, m.hkirc.net.hk...)

Analysis

IP Addresses

c3.hk resolves to four IP addresses: 104.21.62.81, 172.67.221.221, 2606:4700:3032::ac43:dddd and 2606:4700:3033::6815:3e51.

Additional host names — www.ittc-dz.com.cdn.cloudflare.net, jyjiachi.com, mediaiq.ro and two others — share IP numbers with c3.hk.

Name Servers

DNS delegation for c3.hk points to two name servers: nancy.ns.cloudflare.com and piers.ns.cloudflare.com.

c3.hk shares its name server setup with other domains, including oai-o.com, chiranaplus.biz, philipp-pleins.com and two others.

c3.hk has at least partial name server overlap with other domains, such as cdrdwh.com, relaxtransport.com, tap3717fkl.cc and two others.

It is common to see these name servers used together with name servers bruce.ns.cloudflare.com and clark.ns.cloudflare.com.

Host names with 6 IP numbers:

nancy.ns.cloudflare.com has IP addresses 108.162.194.84, 162.159.38.84 and 172.64.34.84, plus 3 other.

piers.ns.cloudflare.com has IP addresses 108.162.195.16, 162.159.44.16 and 172.64.35.16, plus 3 other.

c3.hk - robtex.com

c3.hk

hk

Same first word

Similar names

DNS History

🔍 DNS Trace

📋 Delegation Chain

✅ Authoritative Response

🔒 DNSSEC Status

⏱️ Timing

📄 Records

📌 Glue Records Collected

Analysis

IP Addresses

Name Servers

`c3.hk`

`hk`