`ctfhub.io`

DNSSEC	⚠️ Not signed
A	159.89.249.229^{🇬🇧 DIGITALOCEAN159.89.248.0/22 DigitalOcean}
NS	`ns1.digitalocean.com` ⭐
		A	2606:4700:52::ac40:34d2^{🇺🇸 Cloudflare2606:4700:52::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`ns1.digitalocean.com`
		A	172.64.52.210^{🇺🇸 Cloudflare172.64.52.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`ns1.digitalocean.com`
NS	`ns2.digitalocean.com`
		A	2606:4700:5a::ac40:3515^{🇺🇸 Cloudflare2606:4700:5a::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`ns2.digitalocean.com`
		A	172.64.53.21^{🇺🇸 Cloudflare172.64.53.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`ns2.digitalocean.com`
NS	`ns3.digitalocean.com`
		A	2606:4700:52::ac40:31d1^{🇺🇸 Cloudflare2606:4700:52::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`ns3.digitalocean.com`
		A	172.64.49.209^{🇺🇸 Cloudflare172.64.48.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`ns3.digitalocean.com`
SOA	`ns1.digitalocean.com`hostmaster@ctfhub.io serial=1774762102

`io`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a0.nic.io` ⭐
	NS	`a2.nic.io`
	NS	`b0.nic.io`
	NS	`c0.nic.io`
	SOA	`a0.nic.io`hostmaster@donuts.email serial=1776107050

Subdomains

14q08d7d02m4.ctfhub.io

00fec0dx65e4.ctfhub.io

Same first word

ctfhub.io

ctfhub.com

Similar names

tfchub.com

hbtfcu.com

tfcuhb.com

tcfhub.pl

thucfb.com

htbfcu.blogspot.ug

DNS History

23 records (4 active, 19 former)

○NSingrid.ns.cloudflare.com2019-04-04 → 2020-02-03 · 4 obs

● 2019-04-04 15:19:56
● 2020-02-03 17:10:14
○ 2026-03-09 23:34:38
○ 2026-04-13 19:13:24

○NSmicah.ns.cloudflare.com2019-04-04 → 2020-02-03 · 4 obs

● 2019-04-04 15:19:56
● 2020-02-03 17:10:14
○ 2026-03-09 23:34:38
○ 2026-04-13 19:13:24

●NSns1.digitalocean.com2026-03-09 → 2026-04-13 · 3 obs

○ 2020-02-03 17:10:14
● 2026-03-09 23:34:38
● 2026-04-13 19:13:24

●NSns2.digitalocean.com2026-03-09 → 2026-04-13 · 3 obs

○ 2020-02-03 17:10:14
● 2026-03-09 23:34:38
● 2026-04-13 19:13:24

●NSns3.digitalocean.com2026-03-09 → 2026-04-13 · 3 obs

○ 2020-02-03 17:10:14
● 2026-03-09 23:34:38
● 2026-04-13 19:13:24

○MXmx.zoho.in2019-08-27 → 2020-02-03 · 4 obs

● 2019-08-27 15:07:22
● 2020-02-03 17:10:14
○ 2026-03-09 23:34:38
○ 2026-04-13 19:13:24

○MXmx2.zoho.in2019-08-27 → 2020-02-03 · 4 obs

● 2019-08-27 15:07:22
● 2020-02-03 17:10:14
○ 2026-03-09 23:34:38
○ 2026-04-13 19:13:24

○MXmx3.zoho.in2019-08-27 → 2020-02-03 · 4 obs

● 2019-08-27 15:07:22
● 2020-02-03 17:10:14
○ 2026-03-09 23:34:38
○ 2026-04-13 19:13:24

○A104.31.80.1232019-04-04 → 2020-02-03 · 6 obs

● 2019-04-04 15:19:56
○ 2019-08-27 15:07:22
● 2019-10-25 17:22:42
● 2020-02-03 17:10:14
○ 2026-03-09 23:34:38
○ 2026-04-13 19:13:24

○A104.31.81.1232019-04-04 → 2020-02-03 · 6 obs

● 2019-04-04 15:19:56
○ 2019-08-27 15:07:22
● 2019-10-25 17:22:42
● 2020-02-03 17:10:14
○ 2026-03-09 23:34:38
○ 2026-04-13 19:13:24

●A159.89.249.2292026-03-09 → 2026-04-13 · 3 obs

○ 2020-02-03 17:10:14
● 2026-03-09 23:34:38
● 2026-04-13 19:13:24

○A2001:4860:4802:32::152019-08-27 → 2019-08-27 · 4 obs

○ 2019-04-04 15:19:56
● 2019-08-27 15:07:22
○ 2019-10-25 17:22:42
○ 2026-04-13 19:13:24

○A2001:4860:4802:34::152019-08-27 → 2019-08-27 · 4 obs

○ 2019-04-04 15:19:56
● 2019-08-27 15:07:22
○ 2019-10-25 17:22:42
○ 2026-04-13 19:13:24

○A2001:4860:4802:36::152019-08-27 → 2019-08-27 · 4 obs

○ 2019-04-04 15:19:56
● 2019-08-27 15:07:22
○ 2019-10-25 17:22:42
○ 2026-04-13 19:13:24

○A2001:4860:4802:38::152019-08-27 → 2019-08-27 · 4 obs

○ 2019-04-04 15:19:56
● 2019-08-27 15:07:22
○ 2019-10-25 17:22:42
○ 2026-04-13 19:13:24

○A216.239.32.212019-08-27 → 2019-08-27 · 4 obs

○ 2019-04-04 15:19:56
● 2019-08-27 15:07:22
○ 2019-10-25 17:22:42
○ 2026-04-13 19:13:24

○A216.239.34.212019-08-27 → 2019-08-27 · 4 obs

○ 2019-04-04 15:19:56
● 2019-08-27 15:07:22
○ 2019-10-25 17:22:42
○ 2026-04-13 19:13:24

○A216.239.36.212019-08-27 → 2019-08-27 · 4 obs

○ 2019-04-04 15:19:56
● 2019-08-27 15:07:22
○ 2019-10-25 17:22:42
○ 2026-04-13 19:13:24

○A216.239.38.212019-08-27 → 2019-08-27 · 4 obs

○ 2019-04-04 15:19:56
● 2019-08-27 15:07:22
○ 2019-10-25 17:22:42
○ 2026-04-13 19:13:24

○A2606:4700:30::681f:507b2019-04-04 → 2019-10-25 · 5 obs

● 2019-04-04 15:19:56
○ 2019-08-27 15:07:22
● 2019-10-25 17:22:42
○ 2020-02-03 17:10:14
○ 2026-04-13 19:13:24

○A2606:4700:30::681f:517b2019-04-04 → 2019-10-25 · 5 obs

● 2019-04-04 15:19:56
○ 2019-08-27 15:07:22
● 2019-10-25 17:22:42
○ 2020-02-03 17:10:14
○ 2026-04-13 19:13:24

○A2606:4700:3037::681f:507b2020-02-03 → 2020-02-03 · 4 obs

○ 2019-10-25 17:22:42
● 2020-02-03 17:10:14
○ 2026-03-09 23:34:38
○ 2026-04-13 19:13:24

○A2606:4700:3037::681f:517b2020-02-03 → 2020-02-03 · 4 obs

○ 2019-10-25 17:22:42
● 2020-02-03 17:10:14
○ 2026-03-09 23:34:38
○ 2026-04-13 19:13:24

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
io	a0.nic.io, a2.nic.io, b0.nic.io, c0.nic.io	8 records
ctfhub.io	ns3.digitalocean.com, ns2.digitalocean.com, ns1.digitalocean.com	-

✅ Authoritative Response

Server:172.64.49.209

NS records: ns3.digitalocean.com, ns2.digitalocean.com, ns1.digitalocean.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for ctfhub.io (unsigned zone)

⏱️ Timing

Total: 524ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`159.89.249.229`
NS	3	`ns1.digitalocean.com, ns3.digitalocean.com...`
SOA	1	`ns1.digitalocean.com hostmaster.ctfhub.i`

📌 Glue Records Collected

Total: 8

In-bailiwick: 8 (a0.nic.io, a2.nic.io, b0.nic.io...)

Analysis

Hierarchy

ctfhub.io is parent of 14q08d7d02m4.ctfhub.io and 00fec0dx65e4.ctfhub.io.

IP Addresses

ctfhub.io points to a single IP number: 159.89.249.229.

Other host names like 00fec0dx65e4.ctfhub.io and 14q08d7d02m4.ctfhub.io share IP numbers with ctfhub.io.

Name Servers

ctfhub.io is delegated to three name servers: ns1.digitalocean.com, ns2.digitalocean.com and ns3.digitalocean.com.

ctfhub.io at least partially shares name servers with other domains, for instance coding.com.br, jenetik.com, 3r.media, 33.128.178.in-addr.arpa and 172.35.161.in-addr.arpa.

Host names with two IP numbers:

Host ns1.digitalocean.com points to 2606:4700:52::ac40:34d2 and 172.64.52.210.

Host ns2.digitalocean.com points to 2606:4700:5a::ac40:3515 and 172.64.53.21.

Host ns3.digitalocean.com points to 2606:4700:52::ac40:31d1 and 172.64.49.209.

ctfhub.io - robtex.com

ctfhub.io

io

Subdomains

Same first word

Similar names

DNS History

🔍 DNS Trace

📋 Delegation Chain

✅ Authoritative Response

🔒 DNSSEC Status

⏱️ Timing

📄 Records

📌 Glue Records Collected

Analysis

Hierarchy

IP Addresses

Name Servers

`ctfhub.io`

`io`