ctub.cn - robtex.com

ctub.cn

DNSSEC⚠️ Not signed
NSdiva.ns.cloudflare.com ⭐
A2606:4700:50::adf5:3a61🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRdiva.ns.cloudflare.com
A2803:f800:50::6ca2:c061🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRdiva.ns.cloudflare.com
A2a06:98c1:50::ac40:2061🇺🇸 Cloudflare2a06:98c1:50::/45
PTRdiva.ns.cloudflare.com
A108.162.192.97🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRdiva.ns.cloudflare.com
A172.64.32.97🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRdiva.ns.cloudflare.com
A173.245.58.97🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRdiva.ns.cloudflare.com
NSgordon.ns.cloudflare.com
A2606:4700:58::adf5:3baa🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRgordon.ns.cloudflare.com
A2803:f800:50::6ca2:c1aa🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRgordon.ns.cloudflare.com
A2a06:98c1:50::ac40:21aa🇺🇸 Cloudflare2a06:98c1:50::/45
PTRgordon.ns.cloudflare.com
A108.162.193.170🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRgordon.ns.cloudflare.com
A172.64.33.170🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRgordon.ns.cloudflare.com
A173.245.59.170🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRgordon.ns.cloudflare.com
SOAdiva.ns.cloudflare.comdns@cloudflare.com serial=2398502403

cn

DNSSEC⚠️ Not signed
NSa.dns.cn ⭐
NSb.dns.cn
NSc.dns.cn
NSd.dns.cn
NSe.dns.cn
NSns.cernet.net ⚠️ Not in parent delegation
SOAa.dns.cnroot@cnnic.cn serial=2034546407

Same first word

ctub.com.cn
ctub.cn
ctub.org
ctub.de
ctub.net
ctub.com

Similar names

uctb.com.cn
tbuc.co.kr
ubtc.com
uctb.com
cbut.com
utcb.de
bcut.com
uctb.ru
cbtu.info
tubc.edu
ubtc.org
cutb.ru
ubtc.ca
cbtu.ca
tbuc.com
tbuc.net
bctu.org
ucbt.org
btcu.io
utbc.biz
buct.net
butc.org
ucbt.net
btcu.biz
buct.org
btcu.com
bctu.com
ubtc.ru
utbc.com
buct.com
bctu.cn
ubct.biz
ubtc.edu.mn
utcb.us
tubc.org
utcb.ro
cbtu.cn
cubt.co
tcub.com
bcut.com.au
butc.com
ctbu.edu.cn
tbcu.org
tbuc.cn
tbuc.kr
tbcu.cn
utbc.org
ucbt.com
cubt.de
tbcu.com
bcut.ro
ubtc.jp
btcu.org
tubc.tokyo
tucb.in
ubtc.global
ubtc.net
ubtc.cn
tcub.org
butc.com.cn
cbtu.org
buct.de
tubc.com
tcub.net
buct.cn
ubtc.biz
buct.co.uk
buct.ru
cbtu.com
ubtc.de
cubt.com
ubct.com.my
ctbu.com
ucbt.ru
uctb.sk
buct.site
tcub.cn
ubtc.co.jp
tcub.co
cubt.cn
ubtc.us
tbuc.kiev.ua
btuc.org
btcu.cn
tucb.com
cutb.com
buct.edu.cn
ubtc.eu
cbtu.gov.br
butc.ir

DNS History

5 records (2 active, 3 former)

20222023202420252026NSdiva.ns.cloudflare.comgordon.ns.cloudflare.comjm1.dns.comjm2.dns.comA154.203.171.131
●NSdiva.ns.cloudflare.com2026-03-05 → 2026-03-22 · 3 obs
○ 2021-01-04 14:43:30
● 2026-03-05 05:34:02
● 2026-03-22 17:32:32
●NSgordon.ns.cloudflare.com2026-03-05 → 2026-03-22 · 3 obs
○ 2021-01-04 14:43:30
● 2026-03-05 05:34:02
● 2026-03-22 17:32:32
○NSjm1.dns.com2021-01-04 → 2021-01-04 · 3 obs
● 2021-01-04 14:43:30
○ 2026-03-05 05:34:02
○ 2026-03-22 17:32:32
○NSjm2.dns.com2021-01-04 → 2021-01-04 · 3 obs
● 2021-01-04 14:43:30
○ 2026-03-05 05:34:02
○ 2026-03-22 17:32:32
○A154.203.171.1312021-01-04 → 2021-01-04 · 3 obs
● 2021-01-04 14:43:30
○ 2026-03-05 05:34:02
○ 2026-03-22 17:32:32

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
cne.dns.cn, a.dns.cn, b.dns.cn, c.dns.cn...-
ctub.cndiva.ns.cloudflare.com, gordon.ns.cloudflare.com-

✅ Authoritative Response

Server: 172.64.32.97

NS records: diva.ns.cloudflare.com, gordon.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for ctub.cn (unsigned zone)

⏱️ Timing

Total: 1054ms | Queries: -

📄 Records

TypeCountSample Data
NS2diva.ns.cloudflare.com, gordon.ns.cloudflare.com
SOA1diva.ns.cloudflare.com dns.cloudflare.co

Analysis

Name Servers

Two name servers diva.ns.cloudflare.com and gordon.ns.cloudflare.com handle delegation for ctub.cn.

ctub.cn uses the same name server setup as other domains, for example cdn.space, condos.casa, mksinfosys.com, oppo.quest and qstqr.cn.

ctub.cn partially shares name servers with other domains; examples include gopetfoods.com, ubuntuser.com, leiloaria.com.br, alo789.auction and the-uncertain-four-seasons.info.

these name servers are commonly used with the name servers dexter.ns.cloudflare.com.

Host names with six IP numbers: diva.ns.cloudflare.com points to: 2606:4700:50::adf5:3a61, 2803:f800:50::6ca2:c061, 2a06:98c1:50::ac40:2061, 108.162.192.97, 172.64.32.97 and 173.245.58.97; gordon.ns.cloudflare.com points to: 2606:4700:58::adf5:3baa, 2803:f800:50::6ca2:c1aa, 2a06:98c1:50::ac40:21aa, 108.162.193.170, 172.64.33.170 and 173.245.59.170.