ctftime.org - dns.ninja

`ctftime.org`

DNSSEC	⚠️ Not signed
A	2606:4700:3034::6815:6002^{🇺🇸 Cloudflare2606:4700:3034::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3035::ac43:abeb^{🇺🇸 Cloudflare2606:4700:3035::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.96.2^{Cloudflare104.21.96.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.171.235^{🇺🇸 Cloudflare172.67.160.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`june.ns.cloudflare.com` ⭐
		A	2606:4700:50::adf5:3ab0^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`june.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c0b0^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`june.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:20b0^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`june.ns.cloudflare.com`
		A	108.162.192.176^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`june.ns.cloudflare.com`
		A	172.64.32.176^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`june.ns.cloudflare.com`
		A	173.245.58.176^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`june.ns.cloudflare.com`
NS	`rick.ns.cloudflare.com`
		A	2606:4700:58::adf5:3b8b^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`rick.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c18b^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`rick.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:218b^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`rick.ns.cloudflare.com`
		A	108.162.193.139^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`rick.ns.cloudflare.com`
		A	172.64.33.139^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`rick.ns.cloudflare.com`
		A	173.245.59.139^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`rick.ns.cloudflare.com`
MX	`mx.yandex.ru` ⭐
		A	2a02:6b8::311^{🇷🇺 TELETECH2a02:6b8::/32 Yandex network}
			PTR	`mxfront.stable.qloud-b.yandex.net`
		A	77.88.21.249^{🇷🇺 TELETECH77.88.0.0/18 Yandex enterprise network}
			PTR	`mxfront.stable.qloud-b.yandex.net`
TXT	`v=spf1 redirect=_spf.yandex.net`
HTTPS	HTTP/2 ✓ hints match
		IPv4 hints	104.21.96.2, 172.67.171.235
		IPv6 hints	2606:4700:3034::6815:6002, 2606:4700:3035::ac43:abeb
SOA	`june.ns.cloudflare.com`dns@cloudflare.com serial=2405857626

`org`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a0.org.afilias-nst.info` ⭐ ⚠️ Not in parent delegation
	NS	`a2.org.afilias-nst.info` ⚠️ Not in parent delegation
	NS	`b0.org.afilias-nst.org`
	NS	`b2.org.afilias-nst.org`
	NS	`c0.org.afilias-nst.info` ⚠️ Not in parent delegation
	NS	`d0.org.afilias-nst.org`
	SOA	`a0.org.afilias-nst.info`hostmaster@donuts.email serial=1781429036

rank #36554 globally
rank #4037 in the tld
WOT: SAFE (75/100)
📈 Tranco rank: #96,600

Subdomains

www.ctftime.org

Same first word

ctftime.org

ctftime.com

DNS History

15 records (7 active, 8 former)

○NSdns1.yandex.net2015-06-28 → 2020-03-23 · 4 obs

● 2015-06-28 07:39:34
● 2020-03-23 05:03:08
○ 2026-02-22 23:25:12
○ 2026-06-14 09:34:58

○NSdns1.yandex.ru2015-06-28 → 2016-12-13 · 4 obs

● 2015-06-28 07:39:34
● 2016-12-13 11:45:04
○ 2020-03-23 05:03:08
○ 2026-06-14 09:34:58

○NSdns2.yandex.net2015-06-28 → 2020-03-23 · 4 obs

● 2015-06-28 07:39:34
● 2020-03-23 05:03:08
○ 2026-02-22 23:25:12
○ 2026-06-14 09:34:58

●NSjune.ns.cloudflare.com2026-02-22 → 2026-06-14 · 3 obs

○ 2020-03-23 05:03:08
● 2026-02-22 23:25:12
● 2026-06-14 09:34:58

●NSrick.ns.cloudflare.com2026-02-22 → 2026-06-14 · 3 obs

○ 2020-03-23 05:03:08
● 2026-02-22 23:25:12
● 2026-06-14 09:34:58

●MXmx.yandex.ru2015-06-28 → 2026-06-14 · 2 obs

● 2015-06-28 07:39:34
● 2026-06-14 09:34:58

●A104.21.96.22026-03-08 → 2026-06-14 · 11 obs

○ 2026-02-22 23:25:12
● 2026-03-08 23:18:40
○ 2026-03-11 16:45:32
● 2026-03-14 04:09:16
● 2026-04-21 22:48:50
○ 2026-05-06 12:18:34
● 2026-05-17 04:53:54
○ 2026-05-29 23:03:36
○ 2026-06-01 20:39:04
● 2026-06-08 05:13:10
● 2026-06-14 09:34:58

○A109.233.56.782015-06-28 → 2020-03-23 · 4 obs

● 2015-06-28 07:39:34
● 2020-03-23 05:03:08
○ 2026-02-22 23:25:12
○ 2026-06-14 09:34:58

●A172.67.171.2352026-03-08 → 2026-06-14 · 11 obs

○A188.114.96.02026-02-22 → 2026-06-01 · 12 obs

○ 2020-03-23 05:03:08
● 2026-02-22 23:25:12
○ 2026-03-08 23:18:40
● 2026-03-11 16:45:32
○ 2026-03-14 04:09:16
○ 2026-04-21 22:48:50
● 2026-05-06 12:18:34
○ 2026-05-17 04:53:54
● 2026-05-29 23:03:36
● 2026-06-01 20:39:04
○ 2026-06-08 05:13:10
○ 2026-06-14 09:34:58

○A188.114.97.02026-02-22 → 2026-06-01 · 12 obs

●A2606:4700:3034::6815:60022026-03-08 → 2026-06-14 · 11 obs

●A2606:4700:3035::ac43:abeb2026-03-08 → 2026-06-14 · 11 obs

○A2a06:98c1:3120::2026-02-22 → 2026-06-01 · 12 obs

○A2a06:98c1:3121::2026-02-22 → 2026-06-01 · 12 obs

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
org	b0.org.afilias-nst.org, b2.org.afilias-nst.org, d0.org.afilias-nst.org	-
ctftime.org	rick.ns.cloudflare.com, june.ns.cloudflare.com	-

✅ Authoritative Response

Server:108.162.192.176

NS records: rick.ns.cloudflare.com, june.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for ctftime.org (unsigned zone)

⏱️ Timing

Total: 185ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`172.67.171.235, 104.21.96.2`
AAAA	2	`2606:4700:3034::6815:6002, 2606:4700:3035::ac43:abeb`
NS	2	`june.ns.cloudflare.com, rick.ns.cloudflare.com`
MX	1	`mx.yandex.ru (pri: 10)`
TXT	1	`v=spf1 redirect=_spf.yandex.net`
HTTPS	1	`{"priority":1,"target":".","alpn":["h2"]`
SOA	1	`june.ns.cloudflare.com dns.cloudflare.co`

Analysis

Hierarchy

ctftime.org is the parent zone for www.ctftime.org.

IP Addresses

ctftime.org has four IP addresses: 104.21.96.2, 172.67.171.235, 2606:4700:3034::6815:6002 and 2606:4700:3035::ac43:abeb.

thescreenroom.co.uk, mtdb.ro, cam(0x736578)es.com and two other host names share IP numbers with ctftime.org.

Name Servers

Two name servers handle the delegation for ctftime.org: june.ns.cloudflare.com and rick.ns.cloudflare.com.

ctftime.org uses the same name servers as several other domains — among them soulmovie.hu, theitworkshop.com.au, animeravehq.hu and two more.

ctftime.org partially shares its NS delegation with several other domains, including brooksidedentalcare.net, inglesidedental.com, efreed.net and two others.

These name servers are regularly seen alongside dom.ns.cloudflare.com and graham.ns.cloudflare.com as name servers.

Hostnames that resolve to 6 IP addresses:

june.ns.cloudflare.com resolves to 108.162.192.176, 172.64.32.176 and 173.245.58.176 among others, with 3 other IP addresses in total.

rick.ns.cloudflare.com resolves to 108.162.193.139, 172.64.33.139 and 173.245.59.139 among others, with 3 other IP addresses in total.

Mail Servers

Mail for ctftime.org is handled by a single mail server, mx.yandex.ru.

ctftime.org uses an identical mail server configuration to several other domains — among them o-vode.com, ks-market.ru, xn--d1acvn8d.xn--p1ai and two more.

ctftime.org has at least partial mail server overlap with other domains such as sealskinz.ru, ard-media.ru, denschikov.com and two more.

The host mx.yandex.ru resolves to 77.88.21.249 and 2a02:6b8::311 — two IP addresses.