ctfd.cloud - dns.ninja

ctfd.cloud

DNSSEC⚠️ Not signed
A2606:4700:3032::6815:1e66🇺🇸 Cloudflare2606:4700:3032::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3033::ac43:acbd🇺🇸 Cloudflare2606:4700:3033::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.30.102Cloudflare104.21.16.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.172.189🇺🇸 Cloudflare172.67.160.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
NSdeb.ns.cloudflare.com ⭐
A2606:4700:50::adf5:3a5c🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRdeb.ns.cloudflare.com
A2803:f800:50::6ca2:c05c🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRdeb.ns.cloudflare.com
A2a06:98c1:50::ac40:205c🇺🇸 Cloudflare2a06:98c1:50::/45
PTRdeb.ns.cloudflare.com
A108.162.192.92🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRdeb.ns.cloudflare.com
A172.64.32.92🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRdeb.ns.cloudflare.com
A173.245.58.92🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRdeb.ns.cloudflare.com
NSdonald.ns.cloudflare.com
A2606:4700:58::adf5:3b9e🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRdonald.ns.cloudflare.com
A2803:f800:50::6ca2:c19e🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRdonald.ns.cloudflare.com
A2a06:98c1:50::ac40:219e🇺🇸 Cloudflare2a06:98c1:50::/45
PTRdonald.ns.cloudflare.com
A108.162.193.158🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRdonald.ns.cloudflare.com
A172.64.33.158🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRdonald.ns.cloudflare.com
A173.245.59.158🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRdonald.ns.cloudflare.com
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.30.102, 172.67.172.189
IPv6 hints2606:4700:3032::6815:1e66, 2606:4700:3033::ac43:acbd
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=243, name=cloudflare-ech.com
SOAdeb.ns.cloudflare.comdns@cloudflare.com serial=2406821971

cloud

DNSSEC🔒 Signed (DS record present)
NSns01.trs-dns.com ⭐
NSns.trs-dns.com
NSns01.trs-dns.net
NSns10.trs-dns.info
NSns10.trs-dns.org
SOAns.trs-dns.comtrs-ops@tucows.com serial=1781550930

Same first word

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DNS History

6 records (6 active, 0 former)

NSdeb.ns.cloudflare.comdonald.ns.cloudflare.comA104.21.30.102172.67.172.1892606:4700:3032::6815:1e662606:4700:3033::ac43:acbd
●NSdeb.ns.cloudflare.com2026-04-14 → 2026-06-15 · 2 obs
● 2026-04-14 01:08:44
● 2026-06-15 19:28:14
●NSdonald.ns.cloudflare.com2026-04-14 → 2026-06-15 · 2 obs
● 2026-04-14 01:08:44
● 2026-06-15 19:28:14
●A104.21.30.1022026-04-14 → 2026-06-15 · 2 obs
● 2026-04-14 01:08:44
● 2026-06-15 19:28:14
●A172.67.172.1892026-04-14 → 2026-06-15 · 2 obs
● 2026-04-14 01:08:44
● 2026-06-15 19:28:14
●A2606:4700:3032::6815:1e662026-04-14 → 2026-06-15 · 2 obs
● 2026-04-14 01:08:44
● 2026-06-15 19:28:14
●A2606:4700:3033::ac43:acbd2026-04-14 → 2026-06-15 · 2 obs
● 2026-04-14 01:08:44
● 2026-06-15 19:28:14

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
cloudns10.trs-dns.org, ns10.trs-dns.info, ns01.trs-dns.com, ns01.trs-dns.net8 records
ctfd.clouddeb.ns.cloudflare.com, donald.ns.cloudflare.com-

✅ Authoritative Response

Server:173.245.59.158

NS records: deb.ns.cloudflare.com, donald.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for ctfd.cloud (unsigned zone)

⏱️ Timing

Total: 411ms | Queries: -

📄 Records

TypeCountSample Data
A2172.67.172.189, 104.21.30.102
AAAA22606:4700:3032::6815:1e66, 2606:4700:3033::ac43:acbd
NS2deb.ns.cloudflare.com, donald.ns.cloudflare.com
HTTPS1{"priority":1,"target":".","alpn":["h3",
SOA1deb.ns.cloudflare.com dns.cloudflare.com

📌 Glue Records Collected

Total: 8

Out-of-bailiwick: 8 (ns10.trs-dns.info, ns10.trs-dns.org, ns01.trs-dns.net...)

Analysis

IP Addresses

ctfd.cloud has four IP addresses: 104.21.30.102, 172.67.172.189, 2606:4700:3032::6815:1e66 and 2606:4700:3033::ac43:acbd.

Two other host names, along with dlr.tools, epei.mx and kucingjpberuntung.com, also share IP numbers with ctfd.cloud.

Name Servers

The NS records for ctfd.cloud delegate to deb.ns.cloudflare.com and donald.ns.cloudflare.com.

ctfd.cloud shares its NS records with other domains, for example moonstake.io, halkidiki-sarti.eu, antarcticaam.app and two others.

ctfd.cloud has at least partial name server overlap with other domains, such as valmich.info, insightplusdynamics.digital, zthhb.com and two others.

It is common to find these name servers paired with the name servers magnolia.ns.cloudflare.com.

DNS names with 6 IP addresses:

deb.ns.cloudflare.com maps to 108.162.192.92, 172.64.32.92, 173.245.58.92 and 3 additional IP addresses.

donald.ns.cloudflare.com maps to 108.162.193.158, 172.64.33.158, 173.245.59.158 and 3 additional IP addresses.