ctfy.dev - dns.ninja

`ctfy.dev`

DNSSEC	⚠️ Not signed
A	2606:4700:3031::ac43:b0ae^{🇺🇸 Cloudflare2606:4700:3031::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3037::6815:3828^{🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.56.40^{Cloudflare104.21.48.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.176.174^{🇺🇸 Cloudflare172.67.176.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`aida.ns.cloudflare.com` ⭐
		A	2606:4700:50::adf5:3a3a^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`aida.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c03a^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`aida.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:203a^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`aida.ns.cloudflare.com`
		A	108.162.192.58^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`aida.ns.cloudflare.com`
		A	172.64.32.58^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`aida.ns.cloudflare.com`
		A	173.245.58.58^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`aida.ns.cloudflare.com`
NS	`brian.ns.cloudflare.com`
		A	2606:4700:58::a29f:2c24^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`brian.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c324^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`brian.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2324^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`brian.ns.cloudflare.com`
		A	108.162.195.36^{🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`brian.ns.cloudflare.com`
		A	162.159.44.36^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`brian.ns.cloudflare.com`
		A	172.64.35.36^{🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`brian.ns.cloudflare.com`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.56.40, 172.67.176.174
		IPv6 hints	2606:4700:3031::ac43:b0ae, 2606:4700:3037::6815:3828
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=227, name=cloudflare-ech.com
SOA	`aida.ns.cloudflare.com`dns@cloudflare.com serial=2410542604

`dev`

	DNSSEC	🔒 Signed (DS record present)
	NS	`ns-tld1.charlestonroadregistry.com` ⭐
	NS	`ns-tld2.charlestonroadregistry.com`
	NS	`ns-tld3.charlestonroadregistry.com`
	NS	`ns-tld4.charlestonroadregistry.com`
	NS	`ns-tld5.charlestonroadregistry.com`
	SOA	`ns-tld1.charlestonroadregistry.com`cloud-dns-hostmaster@google.com serial=1

🔒 HSTS Preload (+subdomains)

Same first word

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ctfy.co

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DNS History

12 records (6 active, 6 former)

●NSaida.ns.cloudflare.com2026-04-08 → 2026-07-29 · 2 obs

● 2026-04-08 07:47:28
● 2026-07-29 13:40:18

●NSbrian.ns.cloudflare.com2026-04-08 → 2026-07-29 · 2 obs

● 2026-04-08 07:47:28
● 2026-07-29 13:40:18

●A104.21.56.402026-04-08 → 2026-07-29 · 5 obs

● 2026-04-08 07:47:28
● 2026-05-27 14:28:10
○ 2026-05-28 09:16:50
● 2026-06-06 16:28:18
● 2026-07-29 13:40:18

●A172.67.176.1742026-04-08 → 2026-07-29 · 5 obs

● 2026-04-08 07:47:28
● 2026-05-27 14:28:10
○ 2026-05-28 09:16:50
● 2026-06-06 16:28:18
● 2026-07-29 13:40:18

○A188.114.96.02026-05-28 → 2026-05-28 · 4 obs

○ 2026-05-27 14:28:10
● 2026-05-28 09:16:50
○ 2026-06-06 16:28:18
○ 2026-07-29 13:40:18

○A188.114.97.02026-05-28 → 2026-05-28 · 4 obs

○ 2026-05-27 14:28:10
● 2026-05-28 09:16:50
○ 2026-06-06 16:28:18
○ 2026-07-29 13:40:18

●A2606:4700:3031::ac43:b0ae2026-06-30 → 2026-07-29 · 3 obs

○ 2026-06-14 22:27:38
● 2026-06-30 16:59:24
● 2026-07-29 13:40:18

○A2606:4700:3033::ac43:b0ae2026-04-08 → 2026-06-14 · 7 obs

● 2026-04-08 07:47:28
● 2026-05-27 14:28:10
○ 2026-05-28 09:16:50
● 2026-06-06 16:28:18
● 2026-06-14 22:27:38
○ 2026-06-30 16:59:24
○ 2026-07-29 13:40:18

○A2606:4700:3035::6815:38282026-04-08 → 2026-06-14 · 7 obs

● 2026-04-08 07:47:28
● 2026-05-27 14:28:10
○ 2026-05-28 09:16:50
● 2026-06-06 16:28:18
● 2026-06-14 22:27:38
○ 2026-06-30 16:59:24
○ 2026-07-29 13:40:18

●A2606:4700:3037::6815:38282026-06-30 → 2026-07-29 · 3 obs

○ 2026-06-14 22:27:38
● 2026-06-30 16:59:24
● 2026-07-29 13:40:18

○A2a06:98c1:3120::2026-05-28 → 2026-05-28 · 4 obs

○ 2026-05-27 14:28:10
● 2026-05-28 09:16:50
○ 2026-06-06 16:28:18
○ 2026-07-29 13:40:18

○A2a06:98c1:3121::2026-05-28 → 2026-05-28 · 4 obs

○ 2026-05-27 14:28:10
● 2026-05-28 09:16:50
○ 2026-06-06 16:28:18
○ 2026-07-29 13:40:18

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
dev	ns-tld1.charlestonroadregistry.com, ns-tld2.charlestonroadregistry.com, ns-tld3.charlestonroadregistry.com, ns-tld4.charlestonroadregistry.com...	-
ctfy.dev	aida.ns.cloudflare.com, brian.ns.cloudflare.com	-

✅ Authoritative Response

Server:172.64.32.58

NS records: aida.ns.cloudflare.com, brian.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for ctfy.dev (unsigned zone)

⏱️ Timing

Total: 489ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`172.67.176.174, 104.21.56.40`
AAAA	2	`2606:4700:3037::6815:3828, 2606:4700:3031::ac43:b0ae`
NS	2	`aida.ns.cloudflare.com, brian.ns.cloudflare.com`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`aida.ns.cloudflare.com dns.cloudflare.co`

Analysis

IP Addresses

ctfy.dev resolves to four IP addresses: 104.21.56.40, 172.67.176.174, 2606:4700:3031::ac43:b0ae and 2606:4700:3037::6815:3828.

ydl080.xyz, twin33.net, aplhsindia.in plus two other host names have IP numbers in common with ctfy.dev.

Name Servers

ctfy.dev is delegated to two name servers: aida.ns.cloudflare.com and brian.ns.cloudflare.com.

The name server configuration of ctfy.dev is shared with other domains, for instance foodiemaniac.com, unlimited.energy, tanglewoodeducation.com and two others.

ctfy.dev has at least partial name server overlap with other domains, such as indodaisuntrading.com, edgelix.com, meizihzp.com and two others.

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

Hosts with 6 IP addresses each:

aida.ns.cloudflare.com resolves to 108.162.192.58, 172.64.32.58, 173.245.58.58 and 3 other IP addresses.

brian.ns.cloudflare.com resolves to 108.162.195.36, 162.159.44.36, 172.64.35.36 and 3 other IP addresses.