`studybest.com`

DNSSEC	⚠️ Not signed
A	2606:4700:3036::ac43:ce76^{🇺🇸 Cloudflare2606:4700:3036::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3037::6815:4d60^{🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.77.96^{Cloudflare104.21.64.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.206.118^{🇺🇸 Cloudflare172.67.192.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`danica.ns.cloudflare.com` ⭐
		A	2606:4700:50::a29f:26bb^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`danica.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c2bb^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`danica.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:22bb^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`danica.ns.cloudflare.com`
		A	108.162.194.187^{🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`danica.ns.cloudflare.com`
		A	162.159.38.187^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`danica.ns.cloudflare.com`
		A	172.64.34.187^{🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`danica.ns.cloudflare.com`
NS	`keanu.ns.cloudflare.com`
		A	2606:4700:58::a29f:2ca7^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`keanu.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c3a7^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`keanu.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:23a7^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`keanu.ns.cloudflare.com`
		A	108.162.195.167^{🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`keanu.ns.cloudflare.com`
		A	162.159.44.167^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`keanu.ns.cloudflare.com`
		A	172.64.35.167^{🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`keanu.ns.cloudflare.com`
MX	`_dc-mx.91e0e6ede07d.studybest.com` ⭐
		A	221.121.154.23^{🇦🇺 SERVERS-1221.121.154.0/24 Servers Australia Pty. Ltd PO Box 3187}
			PTR	`server.awz.com`
TXT	`_globalsign-domain-verification=T_a7h3Oins01kcaNgSC0G1M1bBYNq37CQUpqhVheKP`
TXT	`v=spf1 ip4:161.97.150.98 ip4:221.121.154.23 +a +mx include:_spf.google.com ~all`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4	104.21.77.96, 172.67.206.118
		IPv6	2606:4700:3036::ac43:ce76, 2606:4700:3037::6815:4d60
SOA	`danica.ns.cloudflare.com`dns@cloudflare.com serial=2397348909

`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=1774495037

Previously MX for

studybest.com

Same first word

studybest.com

Similar names

beststudy.tw

beststudy.com

DNS History

25 records (7 active, 18 former)

●NSdanica.ns.cloudflare.com2026-02-27 → 2026-03-26 · 3 obs

○ 2021-05-17 05:26:16
● 2026-02-27 17:58:28
● 2026-03-26 03:27:36

●NSkeanu.ns.cloudflare.com2026-02-27 → 2026-03-26 · 3 obs

○ 2021-05-17 05:26:16
● 2026-02-27 17:58:28
● 2026-03-26 03:27:36

○NSns1.ieltss.com2015-06-07 → 2017-09-13 · 5 obs

○ 2007-11-05 11:08:08
● 2015-06-07 00:13:44
● 2017-09-13 10:28:52
○ 2021-05-17 05:26:16
○ 2026-03-26 03:27:36

○NSns1199.whukns.com2021-05-17 → 2021-05-17 · 4 obs

○ 2017-09-13 10:28:52
● 2021-05-17 05:26:16
○ 2026-02-27 17:58:28
○ 2026-03-26 03:27:36

○NSns1200.whukns.com2021-05-17 → 2021-05-17 · 4 obs

○ 2017-09-13 10:28:52
● 2021-05-17 05:26:16
○ 2026-02-27 17:58:28
○ 2026-03-26 03:27:36

○NSns2.ieltss.com2015-06-07 → 2017-09-13 · 5 obs

○ 2007-11-05 11:08:08
● 2015-06-07 00:13:44
● 2017-09-13 10:28:52
○ 2021-05-17 05:26:16
○ 2026-03-26 03:27:36

○NSns3.whois.co.kr2007-11-05 → 2007-11-05 · 3 obs

● 2007-11-05 11:08:08
○ 2015-06-07 00:13:44
○ 2026-03-26 03:27:36

○NSns4.whois.co.kr2007-11-05 → 2007-11-05 · 3 obs

● 2007-11-05 11:08:08
○ 2015-06-07 00:13:44
○ 2026-03-26 03:27:36

●MX_dc-mx.91e0e6ede07d.studybest.com2026-02-27 → 2026-03-26 · 3 obs

○ 2021-05-17 05:26:16
● 2026-02-27 17:58:28
● 2026-03-26 03:27:36

○MXalt1.aspmx.l.google.com2015-09-18 → 2015-10-06 · 5 obs

○ 2007-11-05 11:08:08
● 2015-09-18 13:07:48
● 2015-10-06 12:02:04
○ 2015-11-19 00:34:16
○ 2026-03-26 03:27:36

○MXalt2.aspmx.l.google.com2015-09-18 → 2015-10-06 · 5 obs

○ 2007-11-05 11:08:08
● 2015-09-18 13:07:48
● 2015-10-06 12:02:04
○ 2015-11-19 00:34:16
○ 2026-03-26 03:27:36

○MXaspmx.l.google.com2015-09-18 → 2015-10-06 · 5 obs

○ 2007-11-05 11:08:08
● 2015-09-18 13:07:48
● 2015-10-06 12:02:04
○ 2015-11-19 00:34:16
○ 2026-03-26 03:27:36

○MXaspmx2.googlemail.com2015-09-18 → 2015-10-06 · 5 obs

○ 2007-11-05 11:08:08
● 2015-09-18 13:07:48
● 2015-10-06 12:02:04
○ 2015-11-19 00:34:16
○ 2026-03-26 03:27:36

○MXaspmx3.googlemail.com2015-09-18 → 2015-10-06 · 5 obs

○ 2007-11-05 11:08:08
● 2015-09-18 13:07:48
● 2015-10-06 12:02:04
○ 2015-11-19 00:34:16
○ 2026-03-26 03:27:36

○MXstudybest.com2015-06-07 → 2021-05-17 · 7 obs

○ 2007-11-05 11:08:08
● 2015-06-07 00:13:44
○ 2015-09-18 13:07:48
○ 2017-09-13 10:28:52
● 2021-05-17 05:26:16
○ 2026-02-27 17:58:28
○ 2026-03-26 03:27:36

●A104.21.77.962026-02-27 → 2026-03-26 · 6 obs

○ 2021-05-17 05:26:16
● 2026-02-27 17:58:28
● 2026-03-21 01:10:28
○ 2026-03-23 19:17:30
● 2026-03-25 17:33:52
● 2026-03-26 03:27:36

○A109.75.166.162015-06-07 → 2017-09-13 · 5 obs

○ 2007-11-05 11:08:08
● 2015-06-07 00:13:44
● 2017-09-13 10:28:52
○ 2021-05-17 05:26:16
○ 2026-03-26 03:27:36

●A172.67.206.1182026-02-27 → 2026-03-26 · 6 obs

○ 2021-05-17 05:26:16
● 2026-02-27 17:58:28
● 2026-03-21 01:10:28
○ 2026-03-23 19:17:30
● 2026-03-25 17:33:52
● 2026-03-26 03:27:36

○A188.114.96.02026-03-23 → 2026-03-23 · 4 obs

○ 2026-03-21 01:10:28
● 2026-03-23 19:17:30
○ 2026-03-25 17:33:52
○ 2026-03-26 03:27:36

○A188.114.97.02026-03-23 → 2026-03-23 · 4 obs

○ 2026-03-21 01:10:28
● 2026-03-23 19:17:30
○ 2026-03-25 17:33:52
○ 2026-03-26 03:27:36

○A213.175.208.1872021-05-17 → 2021-05-17 · 4 obs

○ 2017-09-13 10:28:52
● 2021-05-17 05:26:16
○ 2026-02-27 17:58:28
○ 2026-03-26 03:27:36

●A2606:4700:3036::ac43:ce762026-02-27 → 2026-03-26 · 6 obs

○ 2021-05-17 05:26:16
● 2026-02-27 17:58:28
● 2026-03-21 01:10:28
○ 2026-03-23 19:17:30
● 2026-03-25 17:33:52
● 2026-03-26 03:27:36

●A2606:4700:3037::6815:4d602026-02-27 → 2026-03-26 · 6 obs

○ 2021-05-17 05:26:16
● 2026-02-27 17:58:28
● 2026-03-21 01:10:28
○ 2026-03-23 19:17:30
● 2026-03-25 17:33:52
● 2026-03-26 03:27:36

○A2a06:98c1:3120::2026-03-23 → 2026-03-23 · 4 obs

○ 2026-03-21 01:10:28
● 2026-03-23 19:17:30
○ 2026-03-25 17:33:52
○ 2026-03-26 03:27:36

○A2a06:98c1:3121::2026-03-23 → 2026-03-23 · 4 obs

○ 2026-03-21 01:10:28
● 2026-03-23 19:17:30
○ 2026-03-25 17:33:52
○ 2026-03-26 03:27:36

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
studybest.com	danica.ns.cloudflare.com, keanu.ns.cloudflare.com	12 records

✅ Authoritative Response

Server:108.162.194.187

NS records: danica.ns.cloudflare.com, keanu.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for studybest.com (unsigned zone)

⏱️ Timing

Total: 175ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`104.21.77.96, 172.67.206.118`
AAAA	2	`2606:4700:3037::6815:4d60, 2606:4700:3036::ac43:ce76`
NS	2	`danica.ns.cloudflare.com, keanu.ns.cloudflare.com`
MX	1	`_dc-mx.91e0e6ede07d.studybest.com (pri:`
TXT	2	`_globalsign-domain-verification=T_a7h3Oi, v=spf1 ip4:161.97.150.98 ip4:221.121.154`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`danica.ns.cloudflare.com dns.cloudflare.`

📌 Glue Records Collected

Total: 12

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

Analysis

IP Addresses

studybest.com maps to four IP numbers: 2606:4700:3036::ac43:ce76, 2606:4700:3037::6815:4d60, 104.21.77.96 and 172.67.206.118.

other host names include facebooksupport.tempisite.com, www.gazabhindi.com, metasupportai.tempisite.com, www.medapplications.com and situshoki30.com; they share IP numbers with studybest.com.

Name Servers

Two name servers danica.ns.cloudflare.com and keanu.ns.cloudflare.com handle the delegation for studybest.com.

studybest.com shares the same name server setup as other domains, for instance awz.com, ligabtc.com, abhinaba.com, 2uy.com and studyco.com.

studybest.com at least partially shares name servers with other domains, for instance iplwinx.com, poefest.org, vip-arab.com, daviddura.com and mte-telecom.ru.

These name servers are commonly used with ganz.ns.cloudflare.com and carlos.ns.cloudflare.com.

Six IP addresses per host:

danica.ns.cloudflare.com points to 2606:4700:50::a29f:26bb, 2803:f800:50::6ca2:c2bb, 2a06:98c1:50::ac40:22bb, 108.162.194.187, 162.159.38.187 and 172.64.34.187; keanu.ns.cloudflare.com points to 2606:4700:58::a29f:2ca7, 2803:f800:50::6ca2:c3a7, 2a06:98c1:50::ac40:23a7, 108.162.195.167, 162.159.44.167 and 172.64.35.167

Mail Servers

studybest.com is handled by a single mail server, _dc-mx.91e0e6ede07d.studybest.com.

The host name _dc-mx.91e0e6ede07d.studybest.com points to IP 221.121.154.23.

studybest.com - robtex.com

studybest.com

com

Previously MX for

Same first word

Similar names

DNS History

🔍 DNS Trace

📋 Delegation Chain

✅ Authoritative Response

🔒 DNSSEC Status

⏱️ Timing

📄 Records

📌 Glue Records Collected

Analysis

IP Addresses

Name Servers

Mail Servers

`studybest.com`

`com`