chapter20.study - robtex.com

🛡️Domain Reputation CheckBlocklist, phishing & malware status→

chapter20.study

DNSSEC⚠️ Not signed
A2606:4700:3032::ac43:b8b0🇺🇸 Cloudflare2606:4700:3032::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3037::6815:2bc8🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.43.200Cloudflare104.21.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.184.176🇺🇸 Cloudflare172.67.176.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
NSbuck.ns.cloudflare.com ⭐
A2606:4700:58::adf5:3b4e🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRbuck.ns.cloudflare.com
A2803:f800:50::6ca2:c14e🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRbuck.ns.cloudflare.com
A2a06:98c1:50::ac40:214e🇺🇸 Cloudflare2a06:98c1:50::/45
PTRbuck.ns.cloudflare.com
A108.162.193.78🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRbuck.ns.cloudflare.com
A172.64.33.78🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRbuck.ns.cloudflare.com
A173.245.59.78🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRbuck.ns.cloudflare.com
NSelisabeth.ns.cloudflare.com
A2606:4700:50::a29f:26e0🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRelisabeth.ns.cloudflare.com
A2803:f800:50::6ca2:c2e0🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRelisabeth.ns.cloudflare.com
A2a06:98c1:50::ac40:22e0🇺🇸 Cloudflare2a06:98c1:50::/45
PTRelisabeth.ns.cloudflare.com
A108.162.194.224🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRelisabeth.ns.cloudflare.com
A162.159.38.224Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRelisabeth.ns.cloudflare.com
A172.64.34.224🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRelisabeth.ns.cloudflare.com
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.43.200, 172.67.184.176
IPv6 hints2606:4700:3032::ac43:b8b0, 2606:4700:3037::6815:2bc8
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=249, name=cloudflare-ech.com
SOAbuck.ns.cloudflare.comdns@cloudflare.com serial=2412344549

study

DNSSEC🔒 Signed (DS record present)
NSa.nic.study ⭐
NSb.nic.study
NSc.nic.study
NSx.nic.study
NSy.nic.study
NSz.nic.study
SOAa.nic.studyadmin@tldns.godaddy serial=1788613698

Same first word

chapter20.com.au
chapter20.com
chapter20.study

Similar names

20retpahc.workers.dev
chapter02.gr

Previous names

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Next names

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DNS History

6 records (6 active, 0 former)

NSbuck.ns.cloudflare.comelisabeth.ns.cloudflare.comA104.21.43.200172.67.184.1762606:4700:3032::ac43:b8b02606:4700:3037::6815:2bc8
●NSbuck.ns.cloudflare.com2026-08-25 → 2026-09-05 · 2 obs
● 2026-08-25 18:40:42
● 2026-09-05 13:13:16
●NSelisabeth.ns.cloudflare.com2026-08-25 → 2026-09-05 · 2 obs
● 2026-08-25 18:40:42
● 2026-09-05 13:13:16
●A104.21.43.2002026-08-25 → 2026-09-05 · 2 obs
● 2026-08-25 18:40:42
● 2026-09-05 13:13:16
●A172.67.184.1762026-08-25 → 2026-09-05 · 2 obs
● 2026-08-25 18:40:42
● 2026-09-05 13:13:16
●A2606:4700:3032::ac43:b8b02026-08-25 → 2026-09-05 · 2 obs
● 2026-08-25 18:40:42
● 2026-09-05 13:13:16
●A2606:4700:3037::6815:2bc82026-08-25 → 2026-09-05 · 2 obs
● 2026-08-25 18:40:42
● 2026-09-05 13:13:16

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
studyc.nic.study, a.nic.study, b.nic.study, z.nic.study...12 records
chapter20.studybuck.ns.cloudflare.com, elisabeth.ns.cloudflare.com-

✅ Authoritative Response

Server:162.159.38.224

NS records: buck.ns.cloudflare.com, elisabeth.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for chapter20.study (unsigned zone)

⏱️ Timing

Total: 712ms | Queries: -

📄 Records

TypeCountSample Data
A2104.21.43.200, 172.67.184.176
AAAA22606:4700:3032::ac43:b8b0, 2606:4700:3037::6815:2bc8
NS2buck.ns.cloudflare.com, elisabeth.ns.cloudflare.com
HTTPS1{"priority":1,"target":".","alpn":["h3",
SOA1buck.ns.cloudflare.com dns.cloudflare.co

📌 Glue Records Collected

Total: 12

In-bailiwick: 12 (a.nic.study, b.nic.study, c.nic.study...)

Analysis

IP Addresses

chapter20.study resolves to four IP addresses: 104.21.43.200, 172.67.184.176, 2606:4700:3032::ac43:b8b0 and 2606:4700:3037::6815:2bc8.

Additional host names — id-987534.com, stapl-mfund.de, clarityvacations.icu and two others — share IP numbers with chapter20.study.

Name Servers

chapter20.study is served by two delegated name servers, buck.ns.cloudflare.com and elisabeth.ns.cloudflare.com.

chapter20.study shares its name server setup with other domains, including ohne-verifizierung-casino.org, deftonerr.workers.dev, ngetik-aja-dulu.pages.dev and two others.

chapter20.study shares at least some of its name servers with other domains, including brookesbrain.app, prachitbhike.pages.dev, noventcore.pages.dev and two others.

These name servers are frequently seen alongside the name servers javon.ns.cloudflare.com.

Host names with 6 IP numbers:

buck.ns.cloudflare.com carries IP addresses 108.162.193.78, 172.64.33.78 and 173.245.59.78, with 3 other addresses beyond those.

elisabeth.ns.cloudflare.com carries IP addresses 108.162.194.224, 162.159.38.224 and 172.64.34.224, with 3 other addresses beyond those.