stud.co - dns.ninja

`stud.co`

DNSSEC	⚠️ Not signed
A	2600:3c03::f03c:95ff:fe00:29ca^{🇺🇸 AKAMAI-LINODE-AP2600:3c03::/32 Akamai Technologies} ✓ In HTTPS hints
A	2600:3c03::f03c:95ff:fe91:5d52^{🇺🇸 AKAMAI-LINODE-AP2600:3c03::/32 Akamai Technologies} ✓ In HTTPS hints
A	2600:3c03::f03c:95ff:feed:4d4f^{🇺🇸 AKAMAI-LINODE-AP2600:3c03::/32 Akamai Technologies} ✓ In HTTPS hints
A	2600:3c03::f03c:95ff:feed:cf2a^{🇺🇸 AKAMAI-LINODE-AP2600:3c03::/32 Akamai Technologies} ✓ In HTTPS hints
A	45.33.83.100^{🇺🇸 AKAMAI-LINODE-AP45.33.64.0/19 Akamai Technologies} ✓ In HTTPS hints
A	45.79.167.180^{🇺🇸 AKAMAI-LINODE-AP45.79.160.0/20 Akamai Technologies} ✓ In HTTPS hints
A	66.175.209.179^{🇺🇸 AKAMAI-LINODE-AP66.175.208.0/21 Akamai Technologies} ✓ In HTTPS hints
A	96.126.111.165^{🇺🇸 AKAMAI-LINODE-AP96.126.104.0/21 Akamai Technologies} ✓ In HTTPS hints
NS	`anan.ns.giantpanda.com` ⭐
		A	3.33.232.36^{🇺🇸 Amazon3.33.224.0/20}
			PTR	`ab9e1958095d04f26.awsglobalaccelerator.com`
NS	`fubao.ns.giantpanda.com`
		A	75.2.45.63^{🇺🇸 Amazon75.2.32.0/20}
			PTR	`ab9e1958095d04f26.awsglobalaccelerator.com`
MX	`mail.mailerhost.net` ⭐
		A	5.161.133.13^{🇺🇸 HETZNER-CLOUD2-AS5.161.133.0/24}
			PTR	`mail.mailerhost.net`
		A	161.35.84.83^{🇳🇱 DIGITALOCEAN161.35.80.0/20 DigitalOcean}
			PTR	`mail.mailerhost.net`
TXT	`v=spf1 ip6:fd43:c0d1:c090::/48 -all`
HTTPS	HTTP/2, HTTP/3 ✓ hints match
		IPv4 hints	66.175.209.179, 45.33.83.100, 45.79.167.180, 96.126.111.165
		IPv6 hints	2600:3c03::f03c:95ff:feed:4d4f, 2600:3c03::f03c:95ff:feed:cf2a, 2600:3c03::f03c:95ff:fe00:29ca, 2600:3c03::f03c:95ff:fe91:5d52
SOA	`anan.ns.giantpanda.com`admin@giantpanda.com 2013-02-04 #1

`co`

	DNSSEC	🔒 Signed (DS record present)
	NS	`ns0.centralnic.net` ⭐
	NS	`a.registrydns.co`
	NS	`b.registrydns.co`
	NS	`c.registrydns.co`
	NS	`d.registrydns.co`
	SOA	`ns0.centralnic.net`hostmaster@centralnic.net serial=1759726264

Same first word

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DNS History

34 records (11 active, 23 former)

●NSanan.ns.giantpanda.com2026-02-18 → 2026-08-06 · 3 obs

○ 2017-03-27 14:11:40
● 2026-02-18 22:25:50
● 2026-08-06 12:45:26

●NSfubao.ns.giantpanda.com2026-02-18 → 2026-08-06 · 3 obs

○ 2017-03-27 14:11:40
● 2026-02-18 22:25:50
● 2026-08-06 12:45:26

○NSns0.directnic.com2016-07-24 → 2017-03-27 · 5 obs

○ 2016-03-28 06:25:38
● 2016-07-24 03:12:04
● 2017-03-27 14:11:40
○ 2026-02-18 22:25:50
○ 2026-08-06 12:45:26

○NSns1.directnic.com2016-07-24 → 2017-03-27 · 5 obs

○ 2016-03-28 06:25:38
● 2016-07-24 03:12:04
● 2017-03-27 14:11:40
○ 2026-02-18 22:25:50
○ 2026-08-06 12:45:26

○NSns1.voodoo.com2015-05-25 → 2016-03-28 · 4 obs

● 2015-05-25 10:16:52
● 2016-03-28 06:25:38
○ 2016-07-24 03:12:04
○ 2026-08-06 12:45:26

○NSns2.voodoo.com2015-05-25 → 2016-03-28 · 4 obs

● 2015-05-25 10:16:52
● 2016-03-28 06:25:38
○ 2016-07-24 03:12:04
○ 2026-08-06 12:45:26

●MXmail.mailerhost.net2026-02-18 → 2026-08-06 · 2 obs

● 2026-02-18 22:25:50
● 2026-08-06 12:45:26

○A139.162.174.2092026-02-18 → 2026-06-16 · 31 obs

○ 2017-03-27 14:11:40
● 2026-02-18 22:25:50
● 2026-02-19 11:07:26
○ 2026-02-19 17:13:00
● 2026-02-19 21:18:36
○ 2026-02-20 00:14:48
○ 2026-02-20 01:55:52
● 2026-02-20 07:33:42
● 2026-02-21 10:33:10
○ 2026-02-21 11:10:50
● 2026-02-21 12:26:14
● 2026-02-22 00:55:56
○ 2026-02-22 02:52:56
● 2026-02-22 04:25:22
○ 2026-02-22 07:54:58
● 2026-02-24 14:07:14
● 2026-02-26 09:12:56
○ 2026-02-26 21:08:34
● 2026-03-05 07:44:10
○ 2026-03-06 00:01:30
○ 2026-04-06 15:18:02
● 2026-04-16 12:18:00
● 2026-04-17 09:07:34
○ 2026-04-18 01:14:22
○ 2026-05-07 06:48:38
● 2026-05-10 12:38:22
○ 2026-05-17 02:24:18
● 2026-06-06 21:08:18
● 2026-06-16 02:26:12
○ 2026-07-14 09:25:50
○ 2026-08-06 12:45:26

○A139.162.181.762026-02-18 → 2026-06-16 · 31 obs

○A172.104.149.862026-02-18 → 2026-06-16 · 31 obs

○A172.104.203.1862026-02-18 → 2026-06-16 · 31 obs

○A172.104.251.1982026-02-18 → 2026-06-16 · 31 obs

○A192.155.84.2362026-07-14 → 2026-07-25 · 5 obs

○ 2026-06-16 02:26:12
● 2026-07-14 09:25:50
○ 2026-07-23 22:35:40
● 2026-07-25 08:03:54
○ 2026-08-06 12:45:26

○A192.64.147.2032015-05-25 → 2016-03-28 · 4 obs

● 2015-05-25 10:16:52
● 2016-03-28 06:25:38
○ 2016-07-24 03:12:04
○ 2026-08-06 12:45:26

○A23.239.4.932026-07-14 → 2026-07-25 · 5 obs

○ 2026-06-16 02:26:12
● 2026-07-14 09:25:50
○ 2026-07-23 22:35:40
● 2026-07-25 08:03:54
○ 2026-08-06 12:45:26

○A2600:3c01::2000:3aff:feb3:2e942026-07-14 → 2026-07-25 · 5 obs

○ 2026-06-16 02:26:12
● 2026-07-14 09:25:50
○ 2026-07-23 22:35:40
● 2026-07-25 08:03:54
○ 2026-08-06 12:45:26

○A2600:3c01::f03c:95ff:fe91:5de52026-07-14 → 2026-07-25 · 5 obs

○ 2026-06-16 02:26:12
● 2026-07-14 09:25:50
○ 2026-07-23 22:35:40
● 2026-07-25 08:03:54
○ 2026-08-06 12:45:26

○A2600:3c01::f03c:95ff:feeb:5ed62026-07-14 → 2026-07-25 · 5 obs

○ 2026-06-16 02:26:12
● 2026-07-14 09:25:50
○ 2026-07-23 22:35:40
● 2026-07-25 08:03:54
○ 2026-08-06 12:45:26

●A2600:3c03::f03c:95ff:fe00:29ca2026-04-05 → 2026-08-06 · 13 obs

○ 2026-03-06 00:01:30
● 2026-04-05 04:08:40
● 2026-04-06 15:18:02
○ 2026-04-16 12:18:00
○ 2026-04-17 09:07:34
● 2026-04-18 01:14:22
● 2026-05-07 06:48:38
○ 2026-05-10 12:38:22
● 2026-05-17 02:24:18
○ 2026-06-06 21:08:18
● 2026-07-23 22:35:40
○ 2026-07-25 08:03:54
● 2026-08-06 12:45:26

●A2600:3c03::f03c:95ff:fe91:5d522026-02-19 → 2026-08-06 · 30 obs

○ 2026-02-18 22:25:50
○ 2026-02-19 11:07:26
● 2026-02-19 17:13:00
○ 2026-02-19 21:18:36
● 2026-02-20 00:14:48
● 2026-02-20 01:55:52
○ 2026-02-20 07:33:42
○ 2026-02-21 10:33:10
● 2026-02-21 11:10:50
○ 2026-02-21 12:26:14
○ 2026-02-22 00:55:56
● 2026-02-22 02:52:56
○ 2026-02-22 04:25:22
● 2026-02-22 07:54:58
○ 2026-02-24 14:07:14
○ 2026-02-26 09:12:56
● 2026-02-26 21:08:34
○ 2026-03-05 07:44:10
● 2026-03-06 00:01:30
● 2026-04-06 15:18:02
○ 2026-04-16 12:18:00
○ 2026-04-17 09:07:34
● 2026-04-18 01:14:22
● 2026-05-07 06:48:38
○ 2026-05-10 12:38:22
● 2026-05-17 02:24:18
○ 2026-06-06 21:08:18
● 2026-07-23 22:35:40
○ 2026-07-25 08:03:54
● 2026-08-06 12:45:26

●A2600:3c03::f03c:95ff:feed:4d4f2026-02-19 → 2026-08-06 · 30 obs

●A2600:3c03::f03c:95ff:feed:cf2a2026-04-05 → 2026-08-06 · 13 obs

○A2a01:7e01::2000:dff:fec1:5cdb2026-02-18 → 2026-06-16 · 31 obs

○A2a01:7e01::f03c:95ff:fe00:26922026-02-18 → 2026-06-16 · 31 obs

○A2a01:7e01::f03c:95ff:fe91:5d912026-02-18 → 2026-06-16 · 31 obs

○A2a01:7e01::f03c:95ff:feeb:9d4b2026-02-18 → 2026-06-16 · 31 obs

○A2a01:7e01::f03c:95ff:feed:783e2026-02-18 → 2026-06-16 · 31 obs

●A45.33.83.1002026-04-05 → 2026-08-06 · 13 obs

●A45.79.167.1802026-04-05 → 2026-08-06 · 13 obs

●A66.175.209.1792026-02-19 → 2026-08-06 · 30 obs

○A74.117.221.212016-07-24 → 2017-03-27 · 5 obs

○ 2016-03-28 06:25:38
● 2016-07-24 03:12:04
● 2017-03-27 14:11:40
○ 2026-02-18 22:25:50
○ 2026-08-06 12:45:26

○A74.117.221.222016-07-24 → 2017-03-27 · 5 obs

○ 2016-03-28 06:25:38
● 2016-07-24 03:12:04
● 2017-03-27 14:11:40
○ 2026-02-18 22:25:50
○ 2026-08-06 12:45:26

○A74.207.241.2452026-07-14 → 2026-07-25 · 5 obs

○ 2026-06-16 02:26:12
● 2026-07-14 09:25:50
○ 2026-07-23 22:35:40
● 2026-07-25 08:03:54
○ 2026-08-06 12:45:26

●A96.126.111.1652026-02-19 → 2026-08-06 · 30 obs

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
co	b.registrydns.co, c.registrydns.co, d.registrydns.co, a.registrydns.co	-
stud.co	anan.ns.giantpanda.com, fubao.ns.giantpanda.com	-

✅ Authoritative Response

Server:75.2.45.63

NS records: anan.ns.giantpanda.com, fubao.ns.giantpanda.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for stud.co (unsigned zone)

⏱️ Timing

Total: 515ms | Queries: -

📄 Records

Type	Count	Sample Data
A	4	`66.175.209.179, 45.33.83.100...`
AAAA	4	`2600:3c03::f03c:95ff:feed:4d4f, 2600:3c03::f03c:95ff:fe00:29ca...`
NS	2	`anan.ns.giantpanda.com, fubao.ns.giantpanda.com`
MX	1	`mail.mailerhost.net (pri: 1)`
TXT	1	`v=spf1 ip6:fd43:c0d1:c090::/48 -all`
HTTPS	1	`{"priority":1,"target":".","alpn":["h2",`
SOA	1	`anan.ns.giantpanda.com admin.giantpanda.`

Analysis

IP Addresses

With 8 IP addresses in total, stud.co resolves to 45.33.83.100, 45.79.167.180, 66.175.209.179 and 5 other.

Among the host names that share IP numbers with stud.co are *.toop.net, www.escortbayanlar.us.de, shipengliang.com.com and two others.

Name Servers

stud.co uses two name servers for its delegation: anan.ns.giantpanda.com and fubao.ns.giantpanda.com.

stud.co has the same name server delegation as a number of other domains, such as cult(0x736578).com, net(0x7075737379).com, www.suckass.com and two more.

There is at least partial name server overlap between stud.co and other domains — clinto.it, mail.suddenattacksea.com, mail.nrw.ford-funeralhome.com and two more among them.

These name servers regularly appear alongside lunlun.ns.giantpanda.com, yangyang.ns.giantpanda.com, shishi.ns.giantpanda.com and 3 other name servers in NS record sets.

anan.ns.giantpanda.com → 3.33.232.36 and fubao.ns.giantpanda.com → 75.2.45.63: one IP number per host name.

Mail Servers

stud.co routes its mail through a single mail server, mail.mailerhost.net.

stud.co has the same mail server arrangement as a number of other domains, for example trueteambillpay.com, fathogs.com, hostmaster.respond.net and two more.

mail.mailerhost.net carries two IP numbers: 5.161.133.13 and 161.35.84.83.