`tehstud.ru`

DNSSEC	⚠️ Not signed
A	2606:4700:3034::ac43:d190^{🇺🇸 Cloudflare2606:4700:3034::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3037::6815:4d9a^{🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.77.154^{Cloudflare104.21.64.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.209.144^{🇺🇸 Cloudflare172.67.208.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`alan.ns.cloudflare.com` ⭐
		A	2606:4700:58::adf5:3b39^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`alan.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c139^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`alan.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2139^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`alan.ns.cloudflare.com`
		A	108.162.193.57^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`alan.ns.cloudflare.com`
		A	172.64.33.57^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`alan.ns.cloudflare.com`
		A	173.245.59.57^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`alan.ns.cloudflare.com`
NS	`etta.ns.cloudflare.com`
		A	2606:4700:50::adf5:3a9c^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`etta.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c09c^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`etta.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:209c^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`etta.ns.cloudflare.com`
		A	108.162.192.156^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`etta.ns.cloudflare.com`
		A	172.64.32.156^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`etta.ns.cloudflare.com`
		A	173.245.58.156^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`etta.ns.cloudflare.com`
MX	`mail.tehstud.ru` ⭐
		A	31.130.203.201^{🇧🇾 DATAHATA-AS31.130.203.0/24 route object}
			PTR	`mx1.zaochnik.com`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.77.154, 172.67.209.144
		IPv6 hints	2606:4700:3034::ac43:d190, 2606:4700:3037::6815:4d9a
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=109, name=cloudflare-ech.com
SOA	`alan.ns.cloudflare.com`dns@cloudflare.com serial=2402769498

`ru`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a.dns.ripn.net` ⭐
	NS	`b.dns.ripn.net`
	NS	`d.dns.ripn.net`
	NS	`e.dns.ripn.net`
	NS	`f.dns.ripn.net`
	SOA	`a.dns.ripn.net`hostmaster@ripn.net serial=4068672

Same first word

tehstud.ru

Similar names

theusdt.com

thestud.net

thestud.nl

hustedt.us

ethusdt.us

usdteth.co

thedust.pl

DNS History

24 records (7 active, 17 former)

●NSalan.ns.cloudflare.com2026-04-06 → 2026-04-27 · 3 obs

○ 2017-01-26 06:34:52
● 2026-04-06 15:55:42
● 2026-04-27 23:41:42

●NSetta.ns.cloudflare.com2026-04-06 → 2026-04-27 · 3 obs

○ 2017-01-26 06:34:52
● 2026-04-06 15:55:42
● 2026-04-27 23:41:42

○NSns1.avias.ru2017-01-26 → 2017-01-26 · 4 obs

○ 2016-12-17 02:47:24
● 2017-01-26 06:34:52
○ 2026-04-06 15:55:42
○ 2026-04-27 23:41:42

○NSns1.snparking.ru2016-12-17 → 2016-12-17 · 4 obs

○ 2016-10-05 01:53:02
● 2016-12-17 02:47:24
○ 2017-01-26 06:34:52
○ 2026-04-27 23:41:42

○NSns2.avias.ru2017-01-26 → 2017-01-26 · 4 obs

○ 2016-12-17 02:47:24
● 2017-01-26 06:34:52
○ 2026-04-06 15:55:42
○ 2026-04-27 23:41:42

○NSns2.snparking.ru2016-12-17 → 2016-12-17 · 4 obs

○ 2016-10-05 01:53:02
● 2016-12-17 02:47:24
○ 2017-01-26 06:34:52
○ 2026-04-27 23:41:42

○NSns3.salenames.ru2015-07-18 → 2016-10-05 · 4 obs

● 2015-07-18 20:05:08
● 2016-10-05 01:53:02
○ 2016-12-17 02:47:24
○ 2026-04-27 23:41:42

○NSns4.salenames.ru2015-07-18 → 2016-10-05 · 4 obs

● 2015-07-18 20:05:08
● 2016-10-05 01:53:02
○ 2016-12-17 02:47:24
○ 2026-04-27 23:41:42

○NSsnparking.com2016-12-17 → 2016-12-17 · 4 obs

○ 2016-10-05 01:53:02
● 2016-12-17 02:47:24
○ 2017-01-26 06:34:52
○ 2026-04-27 23:41:42

○MX148.240.4.322015-09-12 → 2015-11-01 · 5 obs

○ 2015-07-18 20:05:08
● 2015-09-12 15:37:14
● 2015-11-01 02:05:46
○ 2015-11-28 12:41:14
○ 2026-04-27 23:41:42

○MX148.240.4.322015-07-18 → 2015-07-18 · 3 obs

● 2015-07-18 20:05:08
○ 2015-09-12 15:37:14
○ 2026-04-27 23:41:42

○MXmail.avias.ru2017-01-26 → 2017-01-26 · 4 obs

○ 2016-12-17 02:47:24
● 2017-01-26 06:34:52
○ 2026-04-06 15:55:42
○ 2026-04-27 23:41:42

●MXmail.tehstud.ru2026-04-23 → 2026-04-27 · 3 obs

○ 2026-04-06 15:55:42
● 2026-04-23 21:53:04
● 2026-04-27 23:41:42

○MXvoid.blackhole.mx2015-11-28 → 2016-10-05 · 5 obs

○ 2015-11-01 02:05:46
● 2015-11-28 12:41:14
● 2016-10-05 01:53:02
○ 2016-12-17 02:47:24
○ 2026-04-27 23:41:42

●A104.21.77.1542026-04-06 → 2026-04-27 · 3 obs

○ 2017-01-26 06:34:52
● 2026-04-06 15:55:42
● 2026-04-27 23:41:42

○A109.206.181.712017-01-26 → 2017-01-26 · 4 obs

○ 2016-12-17 02:47:24
● 2017-01-26 06:34:52
○ 2026-04-06 15:55:42
○ 2026-04-27 23:41:42

○A109.206.190.542015-11-01 → 2016-10-05 · 9 obs

○ 2015-09-12 15:37:14
● 2015-11-01 02:05:46
● 2015-11-28 12:41:14
○ 2016-03-13 04:44:22
○ 2016-04-08 09:43:38
● 2016-06-27 23:41:20
● 2016-10-05 01:53:02
○ 2016-12-17 02:47:24
○ 2026-04-27 23:41:42

●A172.67.209.1442026-04-06 → 2026-04-27 · 3 obs

○ 2017-01-26 06:34:52
● 2026-04-06 15:55:42
● 2026-04-27 23:41:42

○A192.237.187.2082016-03-13 → 2016-03-13 · 4 obs

○ 2015-11-28 12:41:14
● 2016-03-13 04:44:22
○ 2016-04-08 09:43:38
○ 2026-04-27 23:41:42

●A2606:4700:3034::ac43:d1902026-04-06 → 2026-04-27 · 3 obs

○ 2017-01-26 06:34:52
● 2026-04-06 15:55:42
● 2026-04-27 23:41:42

●A2606:4700:3037::6815:4d9a2026-04-06 → 2026-04-27 · 3 obs

○ 2017-01-26 06:34:52
● 2026-04-06 15:55:42
● 2026-04-27 23:41:42

○A78.140.173.732015-09-12 → 2015-09-12 · 4 obs

○ 2015-07-18 20:05:08
● 2015-09-12 15:37:14
○ 2015-11-01 02:05:46
○ 2026-04-27 23:41:42

○A91.195.240.1352016-12-17 → 2016-12-17 · 4 obs

○ 2016-10-05 01:53:02
● 2016-12-17 02:47:24
○ 2017-01-26 06:34:52
○ 2026-04-27 23:41:42

○A91.195.241.862015-07-18 → 2016-04-08 · 6 obs

● 2015-07-18 20:05:08
○ 2015-09-12 15:37:14
○ 2016-03-13 04:44:22
● 2016-04-08 09:43:38
○ 2016-06-27 23:41:20
○ 2026-04-27 23:41:42

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
ru	a.dns.ripn.net, b.dns.ripn.net, d.dns.ripn.net, e.dns.ripn.net...	-
tehstud.ru	etta.ns.cloudflare.com, alan.ns.cloudflare.com	-

✅ Authoritative Response

Server:173.245.59.57

NS records: etta.ns.cloudflare.com, alan.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for tehstud.ru (unsigned zone)

⏱️ Timing

Total: 996ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`172.67.209.144, 104.21.77.154`
AAAA	2	`2606:4700:3034::ac43:d190, 2606:4700:3037::6815:4d9a`
NS	2	`alan.ns.cloudflare.com, etta.ns.cloudflare.com`
MX	1	`mail.tehstud.ru (pri: 10)`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`alan.ns.cloudflare.com dns.cloudflare.co`

Analysis

IP Addresses

Four IP numbers are pointed to by tehstud.ru: 2606:4700:3034::ac43:d190, 2606:4700:3037::6815:4d9a, 104.21.77.154 and 172.67.209.144.

other host names including questionpro.co, raizesdomundo.com, tracking.trkfly.com, kronzky.info and lwdhqazl.today share IP numbers with tehstud.ru.

Name Servers

tehstud.ru is delegated to two name servers alan.ns.cloudflare.com and etta.ns.cloudflare.com.

tehstud.ru shares the same name server setup as other domains, for instance catfightube.com, zaochnik-com.com, partypiecesltd.com, premium(0x62756b6b616b65).com and persianleague.com.

tehstud.ru at least partially shares name servers with other domains, for instance kickasstorrents.eu, cubestudios.net, plastic-surgery.by, cunyu.cn and ssdwallet.com.

these name servers are commonly used alongside vick.ns.cloudflare.com.

Host names with six IP numbers:

Host name alan.ns.cloudflare.com points to: 2606:4700:58::adf5:3b39, 2803:f800:50::6ca2:c139, 2a06:98c1:50::ac40:2139, 108.162.193.57, 172.64.33.57 and 173.245.59.57.

Host name etta.ns.cloudflare.com points to: 2606:4700:50::adf5:3a9c, 2803:f800:50::6ca2:c09c, 2a06:98c1:50::ac40:209c, 108.162.192.156, 172.64.32.156 and 173.245.58.156.

Mail Servers

tehstud.ru is handled by a single mail server, mail.tehstud.ru.

mail.tehstud.ru resolves to IP 31.130.203.201.

tehstud.ru - robtex.com

tehstud.ru

ru

Same first word

Similar names

DNS History

🔍 DNS Trace

📋 Delegation Chain

✅ Authoritative Response

🔒 DNSSEC Status

⏱️ Timing

📄 Records

Analysis

IP Addresses

Name Servers

Mail Servers

`tehstud.ru`

`ru`