classstd.com - robtex.com

🛡️Domain Reputation CheckBlocklist, phishing & malware status→

classstd.com

DNSSEC⚠️ Not signed
A2606:4700:3032::ac43:c52d🇺🇸 Cloudflare2606:4700:3032::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3037::6815:4c9d🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.76.157Cloudflare104.21.64.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.197.45🇺🇸 Cloudflare172.67.192.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
NSsam.ns.cloudflare.com ⭐
A2606:4700:58::adf5:3b8d🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRsam.ns.cloudflare.com
A2803:f800:50::6ca2:c18d🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRsam.ns.cloudflare.com
A2a06:98c1:50::ac40:218d🇺🇸 Cloudflare2a06:98c1:50::/45
PTRsam.ns.cloudflare.com
A108.162.193.141🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRsam.ns.cloudflare.com
A172.64.33.141🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRsam.ns.cloudflare.com
A173.245.59.141🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRsam.ns.cloudflare.com
NSzainab.ns.cloudflare.com
A2606:4700:50::a29f:2695🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRzainab.ns.cloudflare.com
A2803:f800:50::6ca2:c295🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRzainab.ns.cloudflare.com
A2a06:98c1:50::ac40:2295🇺🇸 Cloudflare2a06:98c1:50::/45
PTRzainab.ns.cloudflare.com
A108.162.194.149🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRzainab.ns.cloudflare.com
A162.159.38.149Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRzainab.ns.cloudflare.com
A172.64.34.149🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRzainab.ns.cloudflare.com
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.76.157, 172.67.197.45
IPv6 hints2606:4700:3032::ac43:c52d, 2606:4700:3037::6815:4c9d
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=204, name=cloudflare-ech.com
SOAsam.ns.cloudflare.comdns@cloudflare.com serial=2415427462

com

DNSSEC🔒 Signed (DS record present)
NSa.gtld-servers.net ⭐
NSb.gtld-servers.net
NSc.gtld-servers.net
NSd.gtld-servers.net
NSe.gtld-servers.net
NSf.gtld-servers.net
NSg.gtld-servers.net
NSh.gtld-servers.net
NSi.gtld-servers.net
NSj.gtld-servers.net
NSk.gtld-servers.net
NSl.gtld-servers.net
NSm.gtld-servers.net
SOAa.gtld-servers.netnstld@verisign-grs.com serial=1790614739

Same first word

classstd.com

Similar names

stdclass.co
sdtclass.com
dtsclass.com
stdclass.work

Previous names

classsss.com
classsta.com
classstaar.com
classstabler.com
classstack.com
classstaff.com
classstaffing.com
classstage.com
classstandard.com
classstar.com
classstars.com
classstart.com
classstarter.com
classstartstoday.com
classstate.com
classstation.com
classstationary.com
classstats.com
classstatus.com
classstaxi.com

Next names

classstep.com
classsticks.com
classstil.com
classstock.com
classstone.com
classstop.com
classstorage.com
classstoragellc.com
classstore.com
classstoreman.com
classstores.com
classstoresite.com
classstory.com
classstream.com
classstreaming.com
classstreams.com
classstrides.com
classstroy.com
classstructure.com

DNS History

10 records (6 active, 4 former)

NSsam.ns.cloudflare.comzainab.ns.cloudflare.comA104.21.76.157172.67.197.452606:4700:3032::ac43:c52d2606:4700:3037::6815:4c9d188.114.96.0188.114.97.02a06:98c1:3120::2a06:98c1:3121::
●NSsam.ns.cloudflare.com2026-09-07 → 2026-09-28 · 2 obs
● 2026-09-07 18:59:52
● 2026-09-28 17:05:40
●NSzainab.ns.cloudflare.com2026-09-07 → 2026-09-28 · 2 obs
● 2026-09-07 18:59:52
● 2026-09-28 17:05:40
●A104.21.76.1572026-09-22 → 2026-09-28 · 3 obs
○ 2026-09-07 18:59:52
● 2026-09-22 08:19:22
● 2026-09-28 17:05:40
●A172.67.197.452026-09-22 → 2026-09-28 · 3 obs
○ 2026-09-07 18:59:52
● 2026-09-22 08:19:22
● 2026-09-28 17:05:40
○A188.114.96.02026-09-07 → 2026-09-07 · 3 obs
● 2026-09-07 18:59:52
○ 2026-09-22 08:19:22
○ 2026-09-28 17:05:40
○A188.114.97.02026-09-07 → 2026-09-07 · 3 obs
● 2026-09-07 18:59:52
○ 2026-09-22 08:19:22
○ 2026-09-28 17:05:40
●A2606:4700:3032::ac43:c52d2026-09-22 → 2026-09-28 · 3 obs
○ 2026-09-07 18:59:52
● 2026-09-22 08:19:22
● 2026-09-28 17:05:40
●A2606:4700:3037::6815:4c9d2026-09-22 → 2026-09-28 · 3 obs
○ 2026-09-07 18:59:52
● 2026-09-22 08:19:22
● 2026-09-28 17:05:40
○A2a06:98c1:3120::2026-09-07 → 2026-09-07 · 3 obs
● 2026-09-07 18:59:52
○ 2026-09-22 08:19:22
○ 2026-09-28 17:05:40
○A2a06:98c1:3121::2026-09-07 → 2026-09-07 · 3 obs
● 2026-09-07 18:59:52
○ 2026-09-22 08:19:22
○ 2026-09-28 17:05:40

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
come.gtld-servers.net, j.gtld-servers.net, b.gtld-servers.net, l.gtld-servers.net...-
classstd.comsam.ns.cloudflare.com, zainab.ns.cloudflare.com12 records

✅ Authoritative Response

Server:108.162.194.149

NS records: sam.ns.cloudflare.com, zainab.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for classstd.com (unsigned zone)

⏱️ Timing

Total: 370ms | Queries: -

📄 Records

TypeCountSample Data
A2172.67.197.45, 104.21.76.157
AAAA22606:4700:3037::6815:4c9d, 2606:4700:3032::ac43:c52d
NS2sam.ns.cloudflare.com, zainab.ns.cloudflare.com
HTTPS1{"priority":1,"target":".","alpn":["h3",
SOA1sam.ns.cloudflare.com dns.cloudflare.com

📌 Glue Records Collected

Total: 12

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

Analysis

IP Addresses

classstd.com has four IP addresses: 104.21.76.157, 172.67.197.45, 2606:4700:3032::ac43:c52d and 2606:4700:3037::6815:4c9d.

Two other host names, along with phonelookupgbkyc6t2.cfd, casino-v8x.buzz and c7ccc.org, also share IP numbers with classstd.com.

Name Servers

classstd.com has two authoritative name servers — sam.ns.cloudflare.com and zainab.ns.cloudflare.com.

classstd.com shares its NS records with other domains, for example 867891.net, btwhg.com, 539918.com and two others.

classstd.com partially shares its NS delegation with several other domains, including seasonalgraph.com, bmartiruby.pages.dev, valorportalmagic.live and two others.

The name servers lila.ns.cloudflare.com, henry.ns.cloudflare.com, elisa.ns.cloudflare.com and norman.ns.cloudflare.com are often found in use alongside these name servers.

DNS names with 6 IP addresses:

sam.ns.cloudflare.com points to 108.162.193.141, 172.64.33.141, 173.245.59.141 and 3 other IP addresses.

zainab.ns.cloudflare.com points to 108.162.194.149, 162.159.38.149, 172.64.34.149 and 3 other IP addresses.