hdstudy.net - dns.ninja

🛡️Domain Reputation CheckBlocklist, phishing & malware status→

`hdstudy.net`

DNSSEC	⚠️ Not signed
A	183.111.183.36^{🇰🇷 KT-NET183.104.0.0/13 KORNET KOREA TELECOM}
NS	`hdstudy.net` ⭐
		A	183.111.183.36^{🇰🇷 KT-NET183.104.0.0/13 KORNET KOREA TELECOM}
NS	`ns1.cafe24.co.kr`
		A	112.175.246.232^{🇰🇷 KT-NET112.168.0.0/13}
			PTR	`gjit.kr`
			PTR	`snoweb.kr`
			PTR	`sinc2030.co.kr`
		A	112.175.246.233^{🇰🇷 KT-NET112.168.0.0/13}
		A	175.125.93.136^{🇰🇷 SKB-NET175.120.0.0/13 SKB summary}
		A	175.125.93.137^{🇰🇷 SKB-NET175.120.0.0/13 SKB summary}
NS	`ns1.cafe24.com`
		A	112.175.246.230^{🇰🇷 KT-NET112.168.0.0/13}
		A	112.175.246.231^{🇰🇷 KT-NET112.168.0.0/13}
		A	116.126.143.242^{🇰🇷 SKB-NET116.126.0.0/16 SK Broadband}
		A	175.125.93.134^{🇰🇷 SKB-NET175.120.0.0/13 SKB summary}
		A	175.125.93.135^{🇰🇷 SKB-NET175.120.0.0/13 SKB summary}
NS	`ns2.cafe24.co.kr`
		A	112.175.247.232^{🇰🇷 KT-NET112.168.0.0/13}
			PTR	`snoweb.kr`
			PTR	`sarchi.co.kr`
		A	112.175.247.233^{🇰🇷 KT-NET112.168.0.0/13}
		A	175.125.93.146^{🇰🇷 SKB-NET175.120.0.0/13 SKB summary}
		A	175.125.93.147^{🇰🇷 SKB-NET175.120.0.0/13 SKB summary}
NS	`ns2.cafe24.com`
		A	1.226.85.4^{🇰🇷 SKB-NET1.224.0.0/13 auto-generated route object for 1.224.0.0/13}
		A	1.234.0.4^{🇰🇷 SKB-NET1.232.0.0/13 auto-generated route object for 1.232.0.0/13}
		A	112.175.11.4^{🇰🇷 KT-NET112.168.0.0/13}
		A	112.175.12.4^{🇰🇷 KT-NET112.168.0.0/13}
MX	`aspmx.l.google.com` ⭐
		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	`alt1.aspmx.l.google.com`⁽⁵⁾
		A	2a00:1450:4025:402::1b^{🇳🇱 Google2a00:1450:4025::/48}
			PTR	`rb-in-f27.1e100.net`
		A	142.250.102.26^{🇺🇸 Google142.250.102.0/24}
			PTR	`rb-in-f26.1e100.net`
MX	`alt2.aspmx.l.google.com`⁽⁶⁾
		A	2a00:1450:4013:c1e::1b^{🇳🇱 Google2a00:1450:4013::/48}
			PTR	`yugrqzs-in-f27.1e100.net`
		A	192.178.213.27^{🇺🇸 Google192.178.213.0/24}
			PTR	`yugrqzs-in-f27.1e100.net`
MX	`alt3.aspmx.l.google.com`⁽¹⁰⁾
		A	2a00:1450:4001:c21::1b^{🇩🇪 Google2a00:1450:4001::/48}
			PTR	`lcfrai-in-f27.1e100.net`
		A	142.251.127.26^{🇺🇸 Google142.251.127.0/24}
			PTR	`lcfrai-in-f26.1e100.net`
MX	`alt4.aspmx.l.google.com`⁽¹¹⁾
		A	2a00:1450:4025:4401::1a^{🇮🇪 Google2a00:1450:4025::/48}
			PTR	`yuskedq-in-f26.1e100.net`
		A	172.253.148.27^{🇺🇸 Google172.253.0.0/16}
			PTR	`yuskedq-in-f27.1e100.net`
TXT	`v=spf1 include:mailgun.org ~all`
TXT	`v=spf1 include:spf.cafe24.com ~all`
TXT	`google-site-verification=rQFXBJ5_BUyi6f_iHKbFqf0Y1UwWGQ23CV-7IMpNspw`
SOA	`hdstudy.net`postmaster@hdstudy.net serial=20220314

`net`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a.gtld-servers.net` ⭐
	NS	`b.gtld-servers.net`
	NS	`c.gtld-servers.net`
	NS	`d.gtld-servers.net`
	NS	`e.gtld-servers.net`
	NS	`f.gtld-servers.net`
	NS	`g.gtld-servers.net`
	NS	`h.gtld-servers.net`
	NS	`i.gtld-servers.net`
	NS	`j.gtld-servers.net`
	NS	`k.gtld-servers.net`
	NS	`l.gtld-servers.net`
	NS	`m.gtld-servers.net`
	SOA	`a.gtld-servers.net`nstld@verisign-grs.com serial=1786792884

NS for

hdstudy.net

Same first word

hdstudy.net

DNS History

19 records (11 active, 8 former)

○NSdns10.hichina.com2015-11-25 → 2016-02-07 · 5 obs

○ 2015-07-23 12:48:32
● 2015-11-25 03:09:16
● 2016-02-07 18:17:44
○ 2016-06-24 19:57:04
○ 2026-08-15 11:51:28

○NSdns9.hichina.com2015-11-25 → 2016-02-07 · 5 obs

○ 2015-07-23 12:48:32
● 2015-11-25 03:09:16
● 2016-02-07 18:17:44
○ 2016-06-24 19:57:04
○ 2026-08-15 11:51:28

●NShdstudy.net2026-07-08 → 2026-08-15 · 3 obs

○ 2016-06-24 19:57:04
● 2026-07-08 09:48:50
● 2026-08-15 11:51:28

○NSn3376.ns.yunjiasu.com2015-07-23 → 2015-07-23 · 3 obs

● 2015-07-23 12:48:32
○ 2015-11-25 03:09:16
○ 2026-08-15 11:51:28

○NSn59.ns.yunjiasu.com2015-07-23 → 2015-07-23 · 3 obs

● 2015-07-23 12:48:32
○ 2015-11-25 03:09:16
○ 2026-08-15 11:51:28

●NSns1.cafe24.co.kr2026-07-08 → 2026-08-15 · 3 obs

○ 2016-06-24 19:57:04
● 2026-07-08 09:48:50
● 2026-08-15 11:51:28

●NSns1.cafe24.com2026-07-08 → 2026-08-15 · 3 obs

○ 2016-06-24 19:57:04
● 2026-07-08 09:48:50
● 2026-08-15 11:51:28

●NSns2.cafe24.co.kr2026-07-08 → 2026-08-15 · 3 obs

○ 2016-06-24 19:57:04
● 2026-07-08 09:48:50
● 2026-08-15 11:51:28

●NSns2.cafe24.com2026-07-08 → 2026-08-15 · 3 obs

○ 2016-06-24 19:57:04
● 2026-07-08 09:48:50
● 2026-08-15 11:51:28

●MXalt1.aspmx.l.google.com2026-07-08 → 2026-08-15 · 3 obs

○ 2016-06-24 19:57:04
● 2026-07-08 09:48:50
● 2026-08-15 11:51:28

●MXalt2.aspmx.l.google.com2026-07-08 → 2026-08-15 · 3 obs

○ 2016-06-24 19:57:04
● 2026-07-08 09:48:50
● 2026-08-15 11:51:28

●MXalt3.aspmx.l.google.com2026-07-08 → 2026-08-15 · 3 obs

○ 2016-06-24 19:57:04
● 2026-07-08 09:48:50
● 2026-08-15 11:51:28

●MXalt4.aspmx.l.google.com2026-07-08 → 2026-08-15 · 3 obs

○ 2016-06-24 19:57:04
● 2026-07-08 09:48:50
● 2026-08-15 11:51:28

●MXaspmx.l.google.com2026-07-08 → 2026-08-15 · 3 obs

○ 2016-06-24 19:57:04
● 2026-07-08 09:48:50
● 2026-08-15 11:51:28

○MXmxn.mxhichina.com2016-01-28 → 2016-02-07 · 4 obs

● 2016-01-28 15:29:34
● 2016-02-07 18:17:44
○ 2016-06-24 19:57:04
○ 2026-08-15 11:51:28

○MXmxw.mxhichina.com2016-01-28 → 2016-02-07 · 4 obs

● 2016-01-28 15:29:34
● 2016-02-07 18:17:44
○ 2016-06-24 19:57:04
○ 2026-08-15 11:51:28

○A162.159.210.192015-07-23 → 2015-07-23 · 3 obs

● 2015-07-23 12:48:32
○ 2016-01-28 15:29:34
○ 2026-08-15 11:51:28

○A162.159.211.192015-07-23 → 2015-07-23 · 3 obs

● 2015-07-23 12:48:32
○ 2016-01-28 15:29:34
○ 2026-08-15 11:51:28

●A183.111.183.362026-07-08 → 2026-08-15 · 3 obs

○ 2016-01-28 15:29:34
● 2026-07-08 09:48:50
● 2026-08-15 11:51:28

🔍 DNS Trace

Analysis

Name Server Role

The NS records for hdstudy.net point back to hdstudy.net itself.

ns1.cafe24.com, ns2.cafe24.com and ns1.cafe24.co.kr are often grouped with hdstudy.net to function as name servers.

IP Addresses

hdstudy.net resolves to just one IP address, 183.111.183.36.

Two other host names, along with northbr.com, jjbr.co.kr and samnamu.com, also share IP numbers with hdstudy.net.

Name Servers

hdstudy.net has five authoritative name servers, specifically hdstudy.net, ns1.cafe24.com, ns2.cafe24.com and two others.

At least some of hdstudy.net's name servers are shared with other domains, for example ecomllc.net, vaahtera.co.kr, diana.io and two more.

These name servers tend to co-occur with ns2.cafe24.co.kr, ns.cafe24.com, ns0.cafe24.com and 4 other name servers in the same DNS delegations.

Host names directing to five IP addresses:

ns1.cafe24.com has four IP addresses — 112.175.246.230, 112.175.246.231, 116.126.143.242 and two others.

Host names that resolve to four IP numbers:

ns2.cafe24.com directs to 1.226.85.4, 1.234.0.4, 112.175.11.4 and 112.175.12.4.

ns1.cafe24.co.kr directs to 112.175.246.232, 112.175.246.233, 175.125.93.136 and 175.125.93.137.

ns2.cafe24.co.kr directs to 112.175.247.232, 112.175.247.233, 175.125.93.146 and 175.125.93.147.

Host names that point to one IP address:

hdstudy.net points to the IP address 183.111.183.36.

Mail Servers

hdstudy.net has five mail servers, which are aspmx.l.google.com, alt1.aspmx.l.google.com, alt2.aspmx.l.google.com and two others.

There is at least a partial MX overlap between hdstudy.net and other domains, including urban-scenarios.com, ns500742.ns500731.ns500754.ns500704.ns500731.ns500704.ns500688.ns500688.ns500671.ns500291.ns500671.ns500666.ns500291.ns500131.lustychickser.com, ns500759.ns500759.ns500698.ns500758.ns500735.ns500735.ns500736.ns500735.ns500576.ns500708.ns500576.ns500698.ns500708.ns500619.ns500576.ns500619.ns500619.trackreceptor.com and two others.

alt3.aspmx.l.google.com, alt4.aspmx.l.google.com, aspmx2.googlemail.com and aspmx3.googlemail.com are mail servers that frequently appear together with these mail servers.

Host names that have two IP addresses:

aspmx.l.google.com maps to two IP addresses — 192.178.223.26 and 2a00:1450:4009:c0f::1a.

alt1.aspmx.l.google.com maps to two IP addresses — 142.250.102.26 and 2a00:1450:4025:402::1b.

alt2.aspmx.l.google.com maps to two IP addresses — 192.178.213.27 and 2a00:1450:4013:c1e::1b.

alt3.aspmx.l.google.com maps to two IP addresses — 142.251.127.26 and 2a00:1450:4001:c21::1b.

alt4.aspmx.l.google.com maps to two IP addresses — 172.253.148.27 and 2a00:1450:4025:4401::1a.