studycs.com - dns.ninja

`studycs.com`

DNSSEC	⚠️ Not signed
A	2606:4700:3034::6815:5a09^{🇺🇸 Cloudflare2606:4700:3034::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3035::ac43:96a6^{🇺🇸 Cloudflare2606:4700:3035::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.90.9^{Cloudflare104.21.80.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.150.166^{🇺🇸 Cloudflare172.67.144.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`edna.ns.cloudflare.com` ⭐
		A	2606:4700:50::adf5:3a6d^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`edna.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c06d^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`edna.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:206d^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`edna.ns.cloudflare.com`
		A	108.162.192.109^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`edna.ns.cloudflare.com`
		A	172.64.32.109^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`edna.ns.cloudflare.com`
		A	173.245.58.109^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`edna.ns.cloudflare.com`
NS	`tom.ns.cloudflare.com`
		A	2606:4700:58::adf5:3b93^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`tom.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c193^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`tom.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2193^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`tom.ns.cloudflare.com`
		A	108.162.193.147^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`tom.ns.cloudflare.com`
		A	172.64.33.147^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`tom.ns.cloudflare.com`
		A	173.245.59.147^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`tom.ns.cloudflare.com`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.90.9, 172.67.150.166
		IPv6 hints	2606:4700:3034::6815:5a09, 2606:4700:3035::ac43:96a6
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=106, name=cloudflare-ech.com
SOA	`edna.ns.cloudflare.com`dns@cloudflare.com serial=2405374110

`com`

	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=1782681460

Same first word

studycs.com

studycs.org

Similar names

studysc.org

csstudy.gov.cn

studysc.com.cn

scstudy.site

csstudy.com

studysc.com

tducsys.id.vn

csstudy.net

DNS History

16 records (6 active, 10 former)

○NSdns13.hichina.com2015-07-17 → 2017-03-28 · 4 obs

● 2015-07-17 07:55:00
● 2017-03-28 07:24:42
○ 2026-02-19 04:41:14
○ 2026-06-28 21:30:04

○NSdns14.hichina.com2015-07-17 → 2017-03-28 · 4 obs

● 2015-07-17 07:55:00
● 2017-03-28 07:24:42
○ 2026-02-19 04:41:14
○ 2026-06-28 21:30:04

●NSedna.ns.cloudflare.com2026-02-19 → 2026-06-28 · 3 obs

○ 2017-03-28 07:24:42
● 2026-02-19 04:41:14
● 2026-06-28 21:30:04

●NStom.ns.cloudflare.com2026-02-19 → 2026-06-28 · 3 obs

○ 2017-03-28 07:24:42
● 2026-02-19 04:41:14
● 2026-06-28 21:30:04

●A104.21.90.92026-02-19 → 2026-06-28 · 8 obs

○ 2017-03-28 07:24:42
● 2026-02-19 04:41:14
● 2026-02-23 12:23:26
○ 2026-02-24 15:43:16
● 2026-03-04 06:07:40
● 2026-06-09 21:56:44
○ 2026-06-26 15:07:12
● 2026-06-28 21:30:04

○A121.42.80.1292015-07-17 → 2016-07-12 · 4 obs

● 2015-07-17 07:55:00
● 2016-07-12 11:11:40
○ 2017-03-28 07:24:42
○ 2026-06-28 21:30:04

●A172.67.150.1662026-02-19 → 2026-06-28 · 8 obs

○ 2017-03-28 07:24:42
● 2026-02-19 04:41:14
● 2026-02-23 12:23:26
○ 2026-02-24 15:43:16
● 2026-03-04 06:07:40
● 2026-06-09 21:56:44
○ 2026-06-26 15:07:12
● 2026-06-28 21:30:04

○A188.114.96.02026-02-24 → 2026-06-26 · 6 obs

○ 2026-02-23 12:23:26
● 2026-02-24 15:43:16
○ 2026-03-04 06:07:40
○ 2026-06-09 21:56:44
● 2026-06-26 15:07:12
○ 2026-06-28 21:30:04

○A188.114.97.02026-02-24 → 2026-06-26 · 6 obs

○ 2026-02-23 12:23:26
● 2026-02-24 15:43:16
○ 2026-03-04 06:07:40
○ 2026-06-09 21:56:44
● 2026-06-26 15:07:12
○ 2026-06-28 21:30:04

○A2606:4700:3033::6815:5a092026-02-19 → 2026-06-09 · 8 obs

○ 2017-03-28 07:24:42
● 2026-02-19 04:41:14
● 2026-02-23 12:23:26
○ 2026-02-24 15:43:16
● 2026-03-04 06:07:40
● 2026-06-09 21:56:44
○ 2026-06-26 15:07:12
○ 2026-06-28 21:30:04

●A2606:4700:3034::6815:5a092026-06-28 → 2026-06-28 · 2 obs

○ 2026-06-26 15:07:12
● 2026-06-28 21:30:04

●A2606:4700:3035::ac43:96a62026-06-28 → 2026-06-28 · 2 obs

○ 2026-06-26 15:07:12
● 2026-06-28 21:30:04

○A2606:4700:3036::ac43:96a62026-02-19 → 2026-06-09 · 8 obs

○ 2017-03-28 07:24:42
● 2026-02-19 04:41:14
● 2026-02-23 12:23:26
○ 2026-02-24 15:43:16
● 2026-03-04 06:07:40
● 2026-06-09 21:56:44
○ 2026-06-26 15:07:12
○ 2026-06-28 21:30:04

○A2a06:98c1:3120::2026-02-24 → 2026-06-26 · 6 obs

○ 2026-02-23 12:23:26
● 2026-02-24 15:43:16
○ 2026-03-04 06:07:40
○ 2026-06-09 21:56:44
● 2026-06-26 15:07:12
○ 2026-06-28 21:30:04

○A2a06:98c1:3121::2026-02-24 → 2026-06-26 · 6 obs

○ 2026-02-23 12:23:26
● 2026-02-24 15:43:16
○ 2026-03-04 06:07:40
○ 2026-06-09 21:56:44
● 2026-06-26 15:07:12
○ 2026-06-28 21:30:04

○A60.205.34.2332017-03-28 → 2017-03-28 · 4 obs

○ 2016-07-12 11:11:40
● 2017-03-28 07:24:42
○ 2026-02-19 04:41:14
○ 2026-06-28 21:30:04

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
studycs.com	tom.ns.cloudflare.com, edna.ns.cloudflare.com	12 records

✅ Authoritative Response

Server:108.162.193.147

NS records: tom.ns.cloudflare.com, edna.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for studycs.com (unsigned zone)

⏱️ Timing

Total: 210ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`104.21.90.9, 172.67.150.166`
AAAA	2	`2606:4700:3035::ac43:96a6, 2606:4700:3034::6815:5a09`
NS	2	`edna.ns.cloudflare.com, tom.ns.cloudflare.com`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`edna.ns.cloudflare.com dns.cloudflare.co`

📌 Glue Records Collected

Total: 12

Out-of-bailiwick: 12 (tom.ns.cloudflare.com, tom.ns.cloudflare.com, tom.ns.cloudflare.com...)

Analysis

IP Addresses

studycs.com points to the four IP addresses 104.21.90.9, 172.67.150.166, 2606:4700:3034::6815:5a09 and 2606:4700:3035::ac43:96a6.

Additional host names — conquestmgnt.com, bexist.ru, khistocks.com and two others — share IP numbers with studycs.com.

Name Servers

DNS delegation for studycs.com points to two name servers: edna.ns.cloudflare.com and tom.ns.cloudflare.com.

studycs.com shares its name server setup with other domains, including zslygc.com, 52yes.net, dgqjjx.com and two others.

The name servers of studycs.com overlap at least partially with those of other domains — among them ali-engineering.com, smartelevatelogic.click, marcopostpisaospedaletto.com and two more.

These name servers commonly appear in combination with the name servers kia.ns.cloudflare.com.

Host names with 6 IP numbers:

edna.ns.cloudflare.com has IP addresses 108.162.192.109, 172.64.32.109 and 173.245.58.109, plus 3 other.

tom.ns.cloudflare.com has IP addresses 108.162.193.147, 172.64.33.147 and 173.245.59.147, plus 3 other.