qrtcwb.study - robtex.com
qrtcwb.study
| DNSSEC | ⚠️ Not signed | ||||||
| A | 2606:4700:3033::ac43:9d03🇺🇸 Cloudflare2606:4700:3033::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 2606:4700:3035::6815:30f1🇺🇸 Cloudflare2606:4700:3035::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 104.21.48.241Cloudflare104.21.48.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 172.67.157.3🇺🇸 Cloudflare172.67.144.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| NS | arch.ns.cloudflare.com ⭐ | ||||||
| A | 2606:4700:58::adf5:3b44🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | arch.ns.cloudflare.com | ||||||
| A | 2803:f800:50::6ca2:c144🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L | ||||||
| PTR | arch.ns.cloudflare.com | ||||||
| A | 2a06:98c1:50::ac40:2144🇺🇸 Cloudflare2a06:98c1:50::/45 | ||||||
| PTR | arch.ns.cloudflare.com | ||||||
| A | 108.162.193.68🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | arch.ns.cloudflare.com | ||||||
| A | 172.64.33.68🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | arch.ns.cloudflare.com | ||||||
| A | 173.245.59.68🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | arch.ns.cloudflare.com | ||||||
| NS | nena.ns.cloudflare.com | ||||||
| A | 2606:4700:50::a29f:26a1🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | nena.ns.cloudflare.com | ||||||
| A | 2803:f800:50::6ca2:c2a1🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L | ||||||
| PTR | nena.ns.cloudflare.com | ||||||
| A | 2a06:98c1:50::ac40:22a1🇺🇸 Cloudflare2a06:98c1:50::/45 | ||||||
| PTR | nena.ns.cloudflare.com | ||||||
| A | 108.162.194.161🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | nena.ns.cloudflare.com | ||||||
| A | 162.159.38.161Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | nena.ns.cloudflare.com | ||||||
| A | 172.64.34.161🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | nena.ns.cloudflare.com | ||||||
| TXT | google-site-verification=n5aAYW5BY75p7b0ep0Kl0Jtve7mOmQ-fq4O-AXST0gY | ||||||
| HTTPS | HTTP/3, HTTP/2 ✓ hints match | ||||||
| IPv4 hints | 104.21.48.241, 172.67.157.3 | ||||||
| IPv6 hints | 2606:4700:3033::ac43:9d03, 2606:4700:3035::6815:30f1 | ||||||
| ECH | X25519, HKDF-SHA256 + AES-128-GCM draft, id=124, name=cloudflare-ech.com | ||||||
| SOA | arch.ns.cloudflare.comdns@cloudflare.com serial=2399728870 | ||||||
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=1776028103 | ||||||
Same first word
qrtcwb.study |
DNS History
6 records (6 active, 0 former)
●NSarch.ns.cloudflare.com2026-04-12 → 2026-04-12 · 2 obs
● 2026-04-12 22:53:36
●NSnena.ns.cloudflare.com2026-04-12 → 2026-04-12 · 2 obs
● 2026-04-12 22:53:36
●A104.21.48.2412026-04-12 → 2026-04-12 · 2 obs
● 2026-04-12 22:53:36
●A172.67.157.32026-04-12 → 2026-04-12 · 2 obs
● 2026-04-12 22:53:36
●A2606:4700:3033::ac43:9d032026-04-12 → 2026-04-12 · 2 obs
● 2026-04-12 22:53:36
●A2606:4700:3035::6815:30f12026-04-12 → 2026-04-12 · 2 obs
● 2026-04-12 22:53:36
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| study | z.nic.study, x.nic.study, b.nic.study, y.nic.study... | 12 records |
| qrtcwb.study | arch.ns.cloudflare.com, nena.ns.cloudflare.com | - |
✅ Authoritative Response
Server:173.245.59.68
NS records: arch.ns.cloudflare.com, nena.ns.cloudflare.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for qrtcwb.study (unsigned zone)
⏱️ Timing
Total: 349ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 2 | 172.67.157.3, 104.21.48.241 |
| AAAA | 2 | 2606:4700:3035::6815:30f1, 2606:4700:3033::ac43:9d03 |
| NS | 2 | arch.ns.cloudflare.com, nena.ns.cloudflare.com |
| TXT | 1 | google-site-verification=n5aAYW5BY75p7b0 |
| HTTPS | 1 | {"priority":1,"target":".","alpn":["h3", |
| SOA | 1 | arch.ns.cloudflare.com dns.cloudflare.co |
📌 Glue Records Collected
Total: 12
In-bailiwick: 12 (z.nic.study, z.nic.study, x.nic.study...)
Analysis
IP Addresses
qrtcwb.study points to four IP numbers: 2606:4700:3033::ac43:9d03, 2606:4700:3035::6815:30f1, 104.21.48.241 and 172.67.157.3.
For instance, other host names defiokyy.com, www.allchans.org, va68.com, xn--mesr8b36x.com and www.ddosmarbenna.com share IP numbers with qrtcwb.study.
Name Servers
qrtcwb.study is delegated to two name servers: arch.ns.cloudflare.com and nena.ns.cloudflare.com.
qrtcwb.study uses the same name server setup as other domains such as linuxgazette.org, threedesigningwomen.com, javerk.is, forsell.ch and labtechnik.ch.
qrtcwb.study shares name servers with other domains at least partially, for example zfbhpf.com, athomeus-closing.com, haberler35.com, simformotion.com and stroy-garazh.ru.
These name servers are commonly used with the name servers harlan.ns.cloudflare.com and venkat.ns.cloudflare.com.
Host names with six IP numbers: host name arch.ns.cloudflare.com points to: 2606:4700:58::adf5:3b44, 2803:f800:50::6ca2:c144, 2a06:98c1:50::ac40:2144, 108.162.193.68, 172.64.33.68 and 173.245.59.68; host name nena.ns.cloudflare.com points to: 2606:4700:50::a29f:26a1, 2803:f800:50::6ca2:c2a1, 2a06:98c1:50::ac40:22a1, 108.162.194.161, 162.159.38.161 and 172.64.34.161.