ctdc.com.tw - robtex.com

ctdc.com.tw

DNSSEC⚠️ Not signed
A2606:4700:3032::6815:57bd🇺🇸 Cloudflare2606:4700:3032::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3037::ac43:919e🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.87.189Cloudflare104.21.80.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.145.158🇺🇸 Cloudflare172.67.144.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
NSkate.ns.cloudflare.com ⭐
A2606:4700:50::adf5:3a7c🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRkate.ns.cloudflare.com
A2803:f800:50::6ca2:c07c🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRkate.ns.cloudflare.com
A2a06:98c1:50::ac40:207c🇺🇸 Cloudflare2a06:98c1:50::/45
PTRkate.ns.cloudflare.com
A108.162.192.124🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRkate.ns.cloudflare.com
A172.64.32.124🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRkate.ns.cloudflare.com
A173.245.58.124🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRkate.ns.cloudflare.com
NSnitin.ns.cloudflare.com
A2606:4700:58::adf5:3bd7🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRnitin.ns.cloudflare.com
A2803:f800:50::6ca2:c1d7🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRnitin.ns.cloudflare.com
A2a06:98c1:50::ac40:21d7🇺🇸 Cloudflare2a06:98c1:50::/45
PTRnitin.ns.cloudflare.com
A108.162.193.215🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRnitin.ns.cloudflare.com
A172.64.33.215🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRnitin.ns.cloudflare.com
A173.245.59.215🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRnitin.ns.cloudflare.com
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.87.189, 172.67.145.158
IPv6 hints2606:4700:3032::6815:57bd, 2606:4700:3037::ac43:919e
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=177, name=cloudflare-ech.com
SOAkate.ns.cloudflare.comdns@cloudflare.com serial=2410017509

com.tw

DNSSEC⚠️ Not signed
NSa.twnic.net.tw ⭐ ⚠️ Not in parent delegation
NSanytld.apnic.net ⚠️ Not in parent delegation
NSb.twnic.net.tw ⚠️ Not in parent delegation
NSc.twnic.net.tw ⚠️ Not in parent delegation
NSd.twnic.net.tw ⚠️ Not in parent delegation
NSe.twnic.net.tw ⚠️ Not in parent delegation
NSf.twnic.net.tw ⚠️ Not in parent delegation
NSg.twnic.net.tw ⚠️ Not in parent delegation
NSh.dns.tw ⚠️ Not in parent delegation
NSh.twnic.net.tw ⚠️ Not in parent delegation
SOAa.twnic.net.twsnw@twnic.net.tw serial=2006384026
WOT: SAFE (68/100)
WOT: SAFE (58/100)

Same first word

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ctdc.tech
ctdc.us
ctdc.co.kr
ctdc.org
ctdc.de
ctdc.cn
ctdc.edu.vn
ctdc.com.tw
ctdc.org.in
ctdc.nl
ctdc.ca

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cctd.de
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dctc.net
tcdc.com.tw
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tccd.com.au
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DNS History

13 records (6 active, 7 former)

20162017201820192020202120222023202420252026NSkate.ns.cloudflare.comnitin.ns.cloudflare.comorix.ctdc.com.twA104.21.87.189172.67.145.1582606:4700:3032::6815:57bd2606:4700:3037::ac43:919e188.114.96.0188.114.97.02606:4700:3034::6815:57bd2606:4700:3034::ac43:919e2a06:98c1:3120::2a06:98c1:3121::
●NSkate.ns.cloudflare.com2026-07-04 → 2026-07-21 · 3 obs
○ 2017-03-13 10:09:24
● 2026-07-04 22:17:32
● 2026-07-21 09:19:06
●NSnitin.ns.cloudflare.com2026-07-04 → 2026-07-21 · 3 obs
○ 2017-03-13 10:09:24
● 2026-07-04 22:17:32
● 2026-07-21 09:19:06
○NSorix.ctdc.com.tw2015-04-15 → 2017-03-13 · 4 obs
● 2015-04-15 19:34:20
● 2017-03-13 10:09:24
○ 2026-07-04 22:17:32
○ 2026-07-21 09:19:06
●A104.21.87.1892026-07-14 → 2026-07-21 · 3 obs
○ 2026-07-04 22:17:32
● 2026-07-14 11:22:58
● 2026-07-21 09:19:06
●A172.67.145.1582026-07-14 → 2026-07-21 · 3 obs
○ 2026-07-04 22:17:32
● 2026-07-14 11:22:58
● 2026-07-21 09:19:06
○A188.114.96.02026-07-04 → 2026-07-04 · 3 obs
● 2026-07-04 22:17:32
○ 2026-07-14 11:22:58
○ 2026-07-21 09:19:06
○A188.114.97.02026-07-04 → 2026-07-04 · 3 obs
● 2026-07-04 22:17:32
○ 2026-07-14 11:22:58
○ 2026-07-21 09:19:06
●A2606:4700:3032::6815:57bd2026-07-20 → 2026-07-21 · 3 obs
○ 2026-07-14 11:22:58
● 2026-07-20 12:08:56
● 2026-07-21 09:19:06
○A2606:4700:3034::6815:57bd2026-07-14 → 2026-07-14 · 4 obs
○ 2026-07-04 22:17:32
● 2026-07-14 11:22:58
○ 2026-07-20 12:08:56
○ 2026-07-21 09:19:06
○A2606:4700:3034::ac43:919e2026-07-14 → 2026-07-14 · 4 obs
○ 2026-07-04 22:17:32
● 2026-07-14 11:22:58
○ 2026-07-20 12:08:56
○ 2026-07-21 09:19:06
●A2606:4700:3037::ac43:919e2026-07-20 → 2026-07-21 · 3 obs
○ 2026-07-14 11:22:58
● 2026-07-20 12:08:56
● 2026-07-21 09:19:06
○A2a06:98c1:3120::2026-07-04 → 2026-07-04 · 3 obs
● 2026-07-04 22:17:32
○ 2026-07-14 11:22:58
○ 2026-07-21 09:19:06
○A2a06:98c1:3121::2026-07-04 → 2026-07-04 · 3 obs
● 2026-07-04 22:17:32
○ 2026-07-14 11:22:58
○ 2026-07-21 09:19:06

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
twa.dns.tw, b.dns.tw, c.dns.tw, d.dns.tw...15 records
ctdc.com.twnitin.ns.cloudflare.com, kate.ns.cloudflare.com-

✅ Authoritative Response

Server:108.162.193.215

NS records: nitin.ns.cloudflare.com, kate.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for ctdc.com.tw (unsigned zone)

⏱️ Timing

Total: 1081ms | Queries: -

📄 Records

TypeCountSample Data
A2104.21.87.189, 172.67.145.158
AAAA22606:4700:3037::ac43:919e, 2606:4700:3032::6815:57bd
NS2kate.ns.cloudflare.com, nitin.ns.cloudflare.com
HTTPS1{"priority":1,"target":".","alpn":["h3",
SOA1kate.ns.cloudflare.com dns.cloudflare.co

📌 Glue Records Collected

Total: 15

In-bailiwick: 14 (a.dns.tw, b.dns.tw, c.dns.tw...)

Out-of-bailiwick: 1 (anytld.apnic.net)

Analysis

IP Addresses

ctdc.com.tw directs to four IP numbers, which are 104.21.87.189, 172.67.145.158, 2606:4700:3032::6815:57bd and 2606:4700:3037::ac43:919e.

Two other host names, along with mainloot.com, chloelang.com.cdn.cloudflare.net and host.integratecnology.com, also share IP numbers with ctdc.com.tw.

Name Servers

Two name servers handle the delegation for ctdc.com.tw: kate.ns.cloudflare.com and nitin.ns.cloudflare.com.

ctdc.com.tw shares its NS records with other domains, for example vamosaclase.com.co, 1181sqn.org.uk, (0x736578).uk.net and two others.

The name servers of ctdc.com.tw overlap at least partially with those of other domains — among them rtbai.com, kinozadrot94.site, vpn-vless.online and two more.

These name servers commonly co-occur with the name servers cass.ns.cloudflare.com, luke.ns.cloudflare.com, irma.ns.cloudflare.com and kip.ns.cloudflare.com.

DNS names with 6 IP addresses:

kate.ns.cloudflare.com resolves to 108.162.192.124, 172.64.32.124 and 173.245.58.124 among others, with 3 other IP addresses in total.

nitin.ns.cloudflare.com resolves to 108.162.193.215, 172.64.33.215 and 173.245.59.215 among others, with 3 other IP addresses in total.