🛡️Domain Reputation CheckBlocklist, phishing & malware status→

`studyflash.com`

DNSSEC	⚠️ Not signed
A	2606:4700:3034::6815:146a^{🇺🇸 Cloudflare2606:4700:3034::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3037::ac43:c058^{🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.20.106^{Cloudflare104.21.16.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.192.88^{🇺🇸 Cloudflare172.67.192.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`christina.ns.cloudflare.com` ⭐
		A	2606:4700:50::a29f:26c1^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`christina.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c2c1^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`christina.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:22c1^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`christina.ns.cloudflare.com`
		A	108.162.194.193^{🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`christina.ns.cloudflare.com`
		A	162.159.38.193^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`christina.ns.cloudflare.com`
		A	172.64.34.193^{🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`christina.ns.cloudflare.com`
NS	`sergi.ns.cloudflare.com`
		A	2606:4700:58::a29f:2c44^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`sergi.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c344^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`sergi.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2344^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`sergi.ns.cloudflare.com`
		A	108.162.195.68^{🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`sergi.ns.cloudflare.com`
		A	162.159.44.68^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`sergi.ns.cloudflare.com`
		A	172.64.35.68^{🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`sergi.ns.cloudflare.com`
TXT	`_b5xecpfjr24reaptkqt1nq5au0k3g1d`
TXT	`google-site-verification=VLTngfIb7LCHQa3rYrDKbUCmOl6qh_mSzLKC2gpN9eM`
TXT	`google-site-verification=eo6khqPXH0fcutKuXOgh4oEfdrgeTaFO2iRqTb4Khqo`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.20.106, 172.67.192.88
		IPv6 hints	2606:4700:3034::6815:146a, 2606:4700:3037::ac43:c058
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=146, name=cloudflare-ech.com
SOA	`christina.ns.cloudflare.com`dns@cloudflare.com serial=2415498670

`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=1791034589

Subdomains

sentry-ingest.studyflash.com

Same first word

studyflash.dev

studyflash.net

studyflash.online

studyflash.nl

studyflash.blog

studyflash.at

studyflash.fr

studyflash.ch

studyflash.in

studyflash.app

studyflash.com

studyflash.it

studyflash.de

studyflash.be

studyflash.ai

studyflash.eu

Similar names

flashstudy.net

flashstudy.app

flashstudy.co.uk

flashstudy.fr

flashstudy.vn

flashstudy.xyz

flashstudy.org

flashstudy.de

flashstudy.online

Previous names

Next names

DNS History

14 records (6 active, 8 former)

●NSchristina.ns.cloudflare.com2026-09-28 → 2026-10-03 · 3 obs

○ 2018-06-23 17:49:02
● 2026-09-28 21:45:20
● 2026-10-03 13:49:08

○NSns1.afternic.com2018-06-23 → 2018-06-23 · 4 obs

○ 2017-01-19 14:42:48
● 2018-06-23 17:49:02
○ 2026-09-28 21:45:20
○ 2026-10-03 13:49:08

○NSns2.afternic.com2018-06-23 → 2018-06-23 · 4 obs

○ 2017-01-19 14:42:48
● 2018-06-23 17:49:02
○ 2026-09-28 21:45:20
○ 2026-10-03 13:49:08

○NSns41.domaincontrol.com2015-07-07 → 2017-01-19 · 4 obs

● 2015-07-07 02:34:00
● 2017-01-19 14:42:48
○ 2018-06-23 17:49:02
○ 2026-10-03 13:49:08

○NSns42.domaincontrol.com2015-07-07 → 2017-01-19 · 4 obs

● 2015-07-07 02:34:00
● 2017-01-19 14:42:48
○ 2018-06-23 17:49:02
○ 2026-10-03 13:49:08

●NSsergi.ns.cloudflare.com2026-09-28 → 2026-10-03 · 3 obs

○ 2018-06-23 17:49:02
● 2026-09-28 21:45:20
● 2026-10-03 13:49:08

○MXmailstore1.secureserver.net2015-07-07 → 2017-01-19 · 4 obs

● 2015-07-07 02:34:00
● 2017-01-19 14:42:48
○ 2018-06-23 17:49:02
○ 2026-10-03 13:49:08

○MXsmtp.secureserver.net2015-07-07 → 2017-01-19 · 4 obs

● 2015-07-07 02:34:00
● 2017-01-19 14:42:48
○ 2018-06-23 17:49:02
○ 2026-10-03 13:49:08

●A104.21.20.1062026-09-28 → 2026-10-03 · 3 obs

○ 2018-06-23 17:49:02
● 2026-09-28 21:45:20
● 2026-10-03 13:49:08

●A172.67.192.882026-09-28 → 2026-10-03 · 3 obs

○ 2018-06-23 17:49:02
● 2026-09-28 21:45:20
● 2026-10-03 13:49:08

○A173.201.208.12015-07-07 → 2017-01-19 · 4 obs

● 2015-07-07 02:34:00
● 2017-01-19 14:42:48
○ 2018-06-23 17:49:02
○ 2026-10-03 13:49:08

○A184.168.221.1042018-06-23 → 2018-06-23 · 4 obs

○ 2017-01-19 14:42:48
● 2018-06-23 17:49:02
○ 2026-09-28 21:45:20
○ 2026-10-03 13:49:08

●A2606:4700:3034::6815:146a2026-09-28 → 2026-10-03 · 3 obs

○ 2018-06-23 17:49:02
● 2026-09-28 21:45:20
● 2026-10-03 13:49:08

●A2606:4700:3037::ac43:c0582026-09-28 → 2026-10-03 · 3 obs

○ 2018-06-23 17:49:02
● 2026-09-28 21:45:20
● 2026-10-03 13:49:08

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	h.gtld-servers.net, l.gtld-servers.net, i.gtld-servers.net, a.gtld-servers.net...	-
studyflash.com	christina.ns.cloudflare.com, sergi.ns.cloudflare.com	12 records

✅ Authoritative Response

Server:108.162.195.68

NS records: christina.ns.cloudflare.com, sergi.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for studyflash.com (unsigned zone)

⏱️ Timing

Total: 386ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`172.67.192.88, 104.21.20.106`
AAAA	2	`2606:4700:3034::6815:146a, 2606:4700:3037::ac43:c058`
NS	2	`christina.ns.cloudflare.com, sergi.ns.cloudflare.com`
TXT	3	`_b5xecpfjr24reaptkqt1nq5au0k3g1d, google-site-verification=VLTngfIb7LCHQa3...`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`christina.ns.cloudflare.com dns.cloudfla`

📌 Glue Records Collected

Total: 12

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

Analysis

Hierarchy

studyflash.com serves as the parent of sentry-ingest.studyflash.com.

IP Addresses

studyflash.com resolves to four IP addresses: 104.21.20.106, 172.67.192.88, 2606:4700:3034::6815:146a and 2606:4700:3037::ac43:c058.

jdr1950.us, unlockprep-ai.com, babybuntingdirect.com plus two other host names have IP numbers in common with studyflash.com.

Name Servers

DNS delegation for studyflash.com points to two name servers: christina.ns.cloudflare.com and sergi.ns.cloudflare.com.

The name server configuration of studyflash.com is shared with other domains, for instance perfect-jewelry-tower.pages.dev, movies2watch.tw, arsolutionandservices.com and two others.

studyflash.com has at least partial name server overlap with other domains, such as vicenzaveiculos.com.br, chilly-phone.pages.dev, morbtaveli.fun and two others.

Hosts with 6 IP addresses each:

christina.ns.cloudflare.com has IP addresses 108.162.194.193, 162.159.38.193 and 172.64.34.193, plus 3 other.

sergi.ns.cloudflare.com has IP addresses 108.162.195.68, 162.159.44.68 and 172.64.35.68, plus 3 other.

studyflash.com - robtex.com

studyflash.com

com

Subdomains

Same first word

Similar names

Previous names

Next names

DNS History

🔍 DNS Trace

📋 Delegation Chain

✅ Authoritative Response

🔒 DNSSEC Status

⏱️ Timing

📄 Records

📌 Glue Records Collected

Analysis

Hierarchy

IP Addresses

Name Servers

`studyflash.com`

`com`