contentstud.io - dns.ninja

`contentstud.io`

DNSSEC	⚠️ Not signed
A	2606:4700:3030::ac43:c0ad^{🇺🇸 Cloudflare2606:4700:3030::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3034::6815:4c63^{🇺🇸 Cloudflare2606:4700:3034::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.76.99^{Cloudflare104.21.64.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.192.173^{🇺🇸 Cloudflare172.67.192.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`ruben.ns.cloudflare.com` ⭐
		A	2606:4700:58::a29f:2c47^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`ruben.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c347^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`ruben.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2347^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`ruben.ns.cloudflare.com`
		A	108.162.195.71^{🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`ruben.ns.cloudflare.com`
		A	162.159.44.71^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`ruben.ns.cloudflare.com`
		A	172.64.35.71^{🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`ruben.ns.cloudflare.com`
NS	`teresa.ns.cloudflare.com`
		A	2606:4700:50::a29f:26d8^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`teresa.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c2d8^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`teresa.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:22d8^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`teresa.ns.cloudflare.com`
		A	108.162.194.216^{🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`teresa.ns.cloudflare.com`
		A	162.159.38.216^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`teresa.ns.cloudflare.com`
		A	172.64.34.216^{🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`teresa.ns.cloudflare.com`
MX	`aspmx.l.google.com` ⭐
		A	2607:f8b0:4004:c25::1b^{🇺🇸 Google2607:f8b0:4004::/48}
			PTR	`yuiadtq-in-f27.1e100.net`
		A	192.178.155.27^{🇺🇸 Google192.178.155.0/24}
			PTR	`yuiadrs-in-f27.1e100.net`
MX	`alt1.aspmx.l.google.com`⁽⁵⁾
		A	2800:3f0:4003:c0f::1a^{🇨🇱 Google2800:3f0:4003::/48}
		A	108.177.123.26^{🇺🇸 Google108.177.123.0/24}
			PTR	`lcscld-in-f26.1e100.net`
MX	`alt2.aspmx.l.google.com`⁽⁵⁾
		A	2a00:1450:400b:c02::1b^{🇮🇪 Google2a00:1450:400b::/48}
			PTR	`dj-in-f27.1e100.net`
		A	172.253.116.27^{🇺🇸 Google172.253.116.0/24}
			PTR	`dj-in-f27.1e100.net`
MX	`alt3.aspmx.l.google.com`⁽¹⁰⁾
		A	2a00:1450:4009:c0f::1a^{🇬🇧 Google2a00:1450:4009::/48}
			PTR	`yulhrs-in-f26.1e100.net`
		A	192.178.223.26^{🇺🇸 Google192.178.223.0/24}
			PTR	`yulhrs-in-f26.1e100.net`
MX	`alt4.aspmx.l.google.com`⁽¹⁰⁾
		A	2a00:1450:400c:c23::1a^{🇧🇪 Google2a00:1450:400c::/48}
			PTR	`yubrupd-in-f26.1e100.net`
		A	172.253.157.26^{🇺🇸 Google172.253.0.0/16}
			PTR	`yubrupd-in-f26.1e100.net`
MX	`36hbsbldmqgkmc33h2iinrguq3nhk5t2i6qfxz3up6b5yecfdgza.mx-verification.google.com`⁽¹⁵⁾
TXT	`google-site-verification=-NTlbPfDIMZ1eckAgt5Q2ya1sEvWWRNB7v7ssHtFd1g`
TXT	`v=spf1 include:customeriomail.com include:_spf.google.com ~all`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.76.99, 172.67.192.173
		IPv6 hints	2606:4700:3030::ac43:c0ad, 2606:4700:3034::6815:4c63
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=31, name=cloudflare-ech.com
SOA	`ruben.ns.cloudflare.com`dns@cloudflare.com serial=2407147730

`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=1784999911

Previously MX for

contentstud.io

Same first word

contentstud.io

DNS History

26 records (12 active, 14 former)

○NSfwd1.nic.ac2015-08-13 → 2015-08-13 · 3 obs

● 2015-08-13 20:52:46
○ 2015-11-30 21:01:06
○ 2026-07-25 17:40:58

○NSfwd2.nic.ac2015-08-13 → 2015-08-13 · 3 obs

● 2015-08-13 20:52:46
○ 2015-11-30 21:01:06
○ 2026-07-25 17:40:58

○NSns2971.hostgator.com2015-11-30 → 2017-03-30 · 5 obs

○ 2015-08-13 20:52:46
● 2015-11-30 21:01:06
● 2017-03-30 11:10:04
○ 2026-04-08 14:26:40
○ 2026-07-25 17:40:58

○NSns2972.hostgator.com2015-11-30 → 2017-03-30 · 5 obs

○ 2015-08-13 20:52:46
● 2015-11-30 21:01:06
● 2017-03-30 11:10:04
○ 2026-04-08 14:26:40
○ 2026-07-25 17:40:58

○NSns6203.hostgator.com2015-11-30 → 2017-03-30 · 5 obs

○ 2015-08-13 20:52:46
● 2015-11-30 21:01:06
● 2017-03-30 11:10:04
○ 2026-04-08 14:26:40
○ 2026-07-25 17:40:58

●NSruben.ns.cloudflare.com2026-04-08 → 2026-07-25 · 3 obs

○ 2017-03-30 11:10:04
● 2026-04-08 14:26:40
● 2026-07-25 17:40:58

●NSteresa.ns.cloudflare.com2026-04-08 → 2026-07-25 · 3 obs

○ 2017-03-30 11:10:04
● 2026-04-08 14:26:40
● 2026-07-25 17:40:58

●MX36hbsbldmqgkmc33h2iinrguq3nhk5t2i6qfxz3up6b5yecfdgza.mx-verification.google.com2026-04-08 → 2026-07-25 · 3 obs

○ 2017-03-30 11:10:04
● 2026-04-08 14:26:40
● 2026-07-25 17:40:58

●MXalt1.aspmx.l.google.com2026-04-08 → 2026-07-25 · 3 obs

○ 2017-03-30 11:10:04
● 2026-04-08 14:26:40
● 2026-07-25 17:40:58

●MXalt2.aspmx.l.google.com2026-04-08 → 2026-07-25 · 3 obs

○ 2017-03-30 11:10:04
● 2026-04-08 14:26:40
● 2026-07-25 17:40:58

●MXalt3.aspmx.l.google.com2026-04-08 → 2026-07-25 · 3 obs

○ 2017-03-30 11:10:04
● 2026-04-08 14:26:40
● 2026-07-25 17:40:58

●MXalt4.aspmx.l.google.com2026-04-08 → 2026-07-25 · 3 obs

○ 2017-03-30 11:10:04
● 2026-04-08 14:26:40
● 2026-07-25 17:40:58

●MXaspmx.l.google.com2026-04-08 → 2026-07-25 · 3 obs

○ 2017-03-30 11:10:04
● 2026-04-08 14:26:40
● 2026-07-25 17:40:58

○MXcontentstud.io2015-11-30 → 2017-03-30 · 5 obs

○ 2015-08-13 20:52:46
● 2015-11-30 21:01:06
● 2017-03-30 11:10:04
○ 2026-04-08 14:26:40
○ 2026-07-25 17:40:58

○MXouter-space2015-08-13 → 2015-08-13 · 3 obs

● 2015-08-13 20:52:46
○ 2015-11-30 21:01:06
○ 2026-07-25 17:40:58

●A104.21.76.992026-04-08 → 2026-07-25 · 3 obs

○ 2017-03-30 11:10:04
● 2026-04-08 14:26:40
● 2026-07-25 17:40:58

○A172.64.80.12026-04-08 → 2026-07-25 · 2 obs

○ 2026-04-08 14:26:40
○ 2026-07-25 17:40:58

●A172.67.192.1732026-04-08 → 2026-07-25 · 3 obs

○ 2017-03-30 11:10:04
● 2026-04-08 14:26:40
● 2026-07-25 17:40:58

○A192.254.184.2082015-11-30 → 2017-03-30 · 5 obs

○ 2015-08-13 20:52:46
● 2015-11-30 21:01:06
● 2017-03-30 11:10:04
○ 2026-04-08 14:26:40
○ 2026-07-25 17:40:58

○A2001:470:1f07:d0b::2142015-08-13 → 2015-08-13 · 3 obs

● 2015-08-13 20:52:46
○ 2015-11-30 21:01:06
○ 2026-07-25 17:40:58

○A2606:4700:130:436c:6f75:6466:6c61:72652026-04-08 → 2026-07-25 · 2 obs

○ 2026-04-08 14:26:40
○ 2026-07-25 17:40:58

●A2606:4700:3030::ac43:c0ad2026-04-08 → 2026-07-25 · 3 obs

○ 2017-03-30 11:10:04
● 2026-04-08 14:26:40
● 2026-07-25 17:40:58

●A2606:4700:3034::6815:4c632026-06-25 → 2026-07-25 · 3 obs

○ 2026-06-15 09:32:06
● 2026-06-25 21:15:46
● 2026-07-25 17:40:58

○A2606:4700:3037::6815:4c632026-04-08 → 2026-06-15 · 5 obs

○ 2017-03-30 11:10:04
● 2026-04-08 14:26:40
● 2026-06-15 09:32:06
○ 2026-06-25 21:15:46
○ 2026-07-25 17:40:58

○A80.249.100.592015-08-13 → 2015-08-13 · 3 obs

● 2015-08-13 20:52:46
○ 2026-04-08 14:26:40
○ 2026-07-25 17:40:58

○A91.208.95.2142015-08-13 → 2015-08-13 · 3 obs

● 2015-08-13 20:52:46
○ 2015-11-30 21:01:06
○ 2026-07-25 17:40:58

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
io	a0.nic.io, a2.nic.io, b0.nic.io, c0.nic.io	-
contentstud.io	ruben.ns.cloudflare.com, teresa.ns.cloudflare.com	-

✅ Authoritative Response

Server:162.159.44.71

NS records: ruben.ns.cloudflare.com, teresa.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for contentstud.io (unsigned zone)

⏱️ Timing

Total: 453ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`172.67.192.173, 104.21.76.99`
AAAA	2	`2606:4700:3030::ac43:c0ad, 2606:4700:3034::6815:4c63`
NS	2	`ruben.ns.cloudflare.com, teresa.ns.cloudflare.com`
MX	6	`aspmx.l.google.com (pri: 1), alt3.aspmx.l.google.com (pri: 10)...`
TXT	2	`google-site-verification=-NTlbPfDIMZ1eck, v=spf1 include:customeriomail.com includ`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`ruben.ns.cloudflare.com dns.cloudflare.c`

Analysis

IP Addresses

contentstud.io directs to four IP numbers, which are 104.21.76.99, 172.67.192.173, 2606:4700:3030::ac43:c0ad and 2606:4700:3034::6815:4c63.

Additional host names — cityapt.co.uk, swisspungudutivu.com, catonparishcouncil.gov.uk and two others — share IP numbers with contentstud.io.

Name Servers

contentstud.io is delegated to two name servers: ruben.ns.cloudflare.com and teresa.ns.cloudflare.com.

contentstud.io shares its name server setup with other domains, including speri.site, pentrunoi.ro, specimenscloud.shop and two others.

The name servers of contentstud.io overlap at least partially with those of other domains — among them lymavorquesti.com, 123broadband.co.uk, yelow.io and two more.

The name servers jason.ns.cloudflare.com, mona.ns.cloudflare.com and roxy.ns.cloudflare.com are commonly seen alongside these name servers.

Host names with 6 IP numbers:

ruben.ns.cloudflare.com resolves to 108.162.195.71, 162.159.44.71, 172.64.35.71 and 3 other IP addresses.

teresa.ns.cloudflare.com resolves to 108.162.194.216, 162.159.38.216, 172.64.34.216 and 3 other IP addresses.

Mail Servers

contentstud.io has 6 mail servers — aspmx.l.google.com, 36hbsbldmqgkmc33h2iinrguq3nhk5t2i6qfxz3up6b5yecfdgza.mx-verification.google.com, alt1.aspmx.l.google.com plus 3 other.

contentstud.io shares mail servers — at least in part — with other domains, including binaryawesome.com, vertigomediaperformance.com, tacswan.com and two others.

These mail servers are frequently used alongside mail servers alt2.aspmx.l.google.com, alt3.aspmx.l.google.com, alt4.aspmx.l.google.com and 4 other.

Host names with two IP numbers:

aspmx.l.google.com points to 192.178.155.27 and 2607:f8b0:4004:c25::1b.

alt1.aspmx.l.google.com points to 108.177.123.26 and 2800:3f0:4003:c0f::1a.

alt2.aspmx.l.google.com points to 172.253.116.27 and 2a00:1450:400b:c02::1b.

alt3.aspmx.l.google.com points to 192.178.223.26 and 2a00:1450:4009:c0f::1a.

alt4.aspmx.l.google.com points to 172.253.157.26 and 2a00:1450:400c:c23::1a.