duwhrf.study - robtex.com
duwhrf.study
| DNSSEC | ⚠️ Not signed | ||||||
| A | 2606:4700:3031::ac43:a5c6🇺🇸 Cloudflare2606:4700:3031::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 2606:4700:3037::6815:51ea🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 104.21.81.234Cloudflare104.21.80.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 172.67.165.198🇺🇸 Cloudflare172.67.160.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| NS | jocelyn.ns.cloudflare.com ⭐ | ||||||
| A | 2606:4700:50::adf5:3aae🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | jocelyn.ns.cloudflare.com | ||||||
| A | 2803:f800:50::6ca2:c0ae🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L | ||||||
| PTR | jocelyn.ns.cloudflare.com | ||||||
| A | 2a06:98c1:50::ac40:20ae🇺🇸 Cloudflare2a06:98c1:50::/45 | ||||||
| PTR | jocelyn.ns.cloudflare.com | ||||||
| A | 108.162.192.174🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | jocelyn.ns.cloudflare.com | ||||||
| A | 172.64.32.174🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | jocelyn.ns.cloudflare.com | ||||||
| A | 173.245.58.174🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | jocelyn.ns.cloudflare.com | ||||||
| NS | thaddeus.ns.cloudflare.com | ||||||
| A | 2606:4700:58::a29f:2c7f🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | thaddeus.ns.cloudflare.com | ||||||
| A | 2803:f800:50::6ca2:c37f🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L | ||||||
| PTR | thaddeus.ns.cloudflare.com | ||||||
| A | 2a06:98c1:50::ac40:237f🇺🇸 Cloudflare2a06:98c1:50::/45 | ||||||
| PTR | thaddeus.ns.cloudflare.com | ||||||
| A | 108.162.195.127🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | thaddeus.ns.cloudflare.com | ||||||
| A | 162.159.44.127Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | thaddeus.ns.cloudflare.com | ||||||
| A | 172.64.35.127🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | thaddeus.ns.cloudflare.com | ||||||
| TXT | google-site-verification=aM4j61tkmKMAHwU-GPdNKz_uApxEkTBgYGwwM2SU08M | ||||||
| HTTPS | HTTP/3, HTTP/2 ✓ hints match | ||||||
| IPv4 hints | 104.21.81.234, 172.67.165.198 | ||||||
| IPv6 hints | 2606:4700:3031::ac43:a5c6, 2606:4700:3037::6815:51ea | ||||||
| ECH | X25519, HKDF-SHA256 + AES-128-GCM draft, id=239, name=cloudflare-ech.com | ||||||
| SOA | jocelyn.ns.cloudflare.comdns@cloudflare.com serial=2401309248 | ||||||
study
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | a.nic.study ⭐ | ||||||
| NS | b.nic.study | ||||||
| NS | c.nic.study | ||||||
| NS | x.nic.study | ||||||
| NS | y.nic.study | ||||||
| NS | z.nic.study | ||||||
| SOA | a.nic.studyadmin@tldns.godaddy serial=1775947006 | ||||||
Same first word
duwhrf.study |
DNS History
6 records (6 active, 0 former)
●NSjocelyn.ns.cloudflare.com2026-03-03 → 2026-04-12 · 2 obs
● 2026-04-12 02:11:54
●NSthaddeus.ns.cloudflare.com2026-03-03 → 2026-04-12 · 2 obs
● 2026-04-12 02:11:54
●A104.21.81.2342026-03-03 → 2026-04-12 · 2 obs
● 2026-04-12 02:11:54
●A172.67.165.1982026-03-03 → 2026-04-12 · 2 obs
● 2026-04-12 02:11:54
●A2606:4700:3031::ac43:a5c62026-03-03 → 2026-04-12 · 2 obs
● 2026-04-12 02:11:54
●A2606:4700:3037::6815:51ea2026-03-03 → 2026-04-12 · 2 obs
● 2026-04-12 02:11:54
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| study | z.nic.study, x.nic.study, b.nic.study, y.nic.study... | 12 records |
| duwhrf.study | jocelyn.ns.cloudflare.com, thaddeus.ns.cloudflare.com | - |
✅ Authoritative Response
Server:108.162.192.174
NS records: jocelyn.ns.cloudflare.com, thaddeus.ns.cloudflare.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for duwhrf.study (unsigned zone)
⏱️ Timing
Total: 349ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 2 | 104.21.81.234, 172.67.165.198 |
| AAAA | 2 | 2606:4700:3037::6815:51ea, 2606:4700:3031::ac43:a5c6 |
| NS | 2 | jocelyn.ns.cloudflare.com, thaddeus.ns.cloudflare.com |
| TXT | 1 | google-site-verification=aM4j61tkmKMAHwU |
| HTTPS | 1 | {"priority":1,"target":".","alpn":["h3", |
| SOA | 1 | jocelyn.ns.cloudflare.com dns.cloudflare |
📌 Glue Records Collected
Total: 12
In-bailiwick: 12 (z.nic.study, z.nic.study, x.nic.study...)
Analysis
IP Addresses
duwhrf.study maps to four IP numbers: 2606:4700:3031::ac43:a5c6, 2606:4700:3037::6815:51ea, 104.21.81.234 and 172.67.165.198.
Other host names, for instance keyshop.online, visionaryscaleops.com, adshield.co, veilleperso.com and presidendigital.com share IP numbers with duwhrf.study.
Name Servers
Two name servers jocelyn.ns.cloudflare.com and thaddeus.ns.cloudflare.com handle delegation for duwhrf.study.
duwhrf.study uses the same name server setup as other domains, for example secure-hsbnet.live, pzsdguv.boutique, dprahmc.art, saratogacookieco.com and hornydating.app.
duwhrf.study partially shares name servers with other domains; examples include quantum-trezor.com, deepwisp.sbs, imoveisprivate.com.br, dscbjq.com and momoecommerce.com.mx.
These name servers are commonly used with crystal.ns.cloudflare.com, marty.ns.cloudflare.com and patryk.ns.cloudflare.com.
Host names with six IP numbers: jocelyn.ns.cloudflare.com points to: 2606:4700:50::adf5:3aae, 2803:f800:50::6ca2:c0ae, 2a06:98c1:50::ac40:20ae, 108.162.192.174, 172.64.32.174 and 173.245.58.174; thaddeus.ns.cloudflare.com points to: 2606:4700:58::a29f:2c7f, 2803:f800:50::6ca2:c37f, 2a06:98c1:50::ac40:237f, 108.162.195.127, 162.159.44.127 and 172.64.35.127.