21-zz.cn - robtex.com
21-zz.cn
| DNSSEC | ⚠️ Not signed | ||||||
| A | 2606:4700:3030::ac43:a499🇺🇸 Cloudflare2606:4700:3030::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 2606:4700:3033::6815:52e3🇺🇸 Cloudflare2606:4700:3033::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 104.21.82.227Cloudflare104.21.80.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 172.67.164.153🇺🇸 Cloudflare172.67.160.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| NS | dakota.ns.cloudflare.com ⭐ | ||||||
| A | 2606:4700:58::a29f:2c4f🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | dakota.ns.cloudflare.com | ||||||
| A | 2803:f800:50::6ca2:c34f🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L | ||||||
| PTR | dakota.ns.cloudflare.com | ||||||
| A | 2a06:98c1:50::ac40:234f🇺🇸 Cloudflare2a06:98c1:50::/45 | ||||||
| PTR | dakota.ns.cloudflare.com | ||||||
| A | 108.162.195.79🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | dakota.ns.cloudflare.com | ||||||
| A | 162.159.44.79Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | dakota.ns.cloudflare.com | ||||||
| A | 172.64.35.79🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | dakota.ns.cloudflare.com | ||||||
| NS | hazel.ns.cloudflare.com | ||||||
| A | 2606:4700:50::a29f:269d🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | hazel.ns.cloudflare.com | ||||||
| A | 2803:f800:50::6ca2:c29d🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L | ||||||
| PTR | hazel.ns.cloudflare.com | ||||||
| A | 2a06:98c1:50::ac40:229d🇺🇸 Cloudflare2a06:98c1:50::/45 | ||||||
| PTR | hazel.ns.cloudflare.com | ||||||
| A | 108.162.194.157🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | hazel.ns.cloudflare.com | ||||||
| A | 162.159.38.157Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | hazel.ns.cloudflare.com | ||||||
| A | 172.64.34.157🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | hazel.ns.cloudflare.com | ||||||
| HTTPS | HTTP/3, HTTP/2 ✓ hints match | ||||||
| IPv4 hints | 104.21.82.227, 172.67.164.153 | ||||||
| IPv6 hints | 2606:4700:3030::ac43:a499, 2606:4700:3033::6815:52e3 | ||||||
| ECH | X25519, HKDF-SHA256 + AES-128-GCM draft, id=119, name=cloudflare-ech.com | ||||||
| SOA | dakota.ns.cloudflare.comdns@cloudflare.com serial=2400377931 | ||||||
cn
| DNSSEC | ⚠️ Not signed | ||||||
| NS | a.dns.cn ⭐ | ||||||
| NS | b.dns.cn | ||||||
| NS | c.dns.cn | ||||||
| NS | d.dns.cn | ||||||
| NS | e.dns.cn | ||||||
| NS | ns.cernet.net ⚠️ Not in parent delegation | ||||||
| SOA | a.dns.cnroot@cnnic.cn serial=2034771393 | ||||||
Subdomains
www.21-zz.cn |
Same first word
21-zz.cn |
DNS History
9 records (6 active, 3 former)
●NSdakota.ns.cloudflare.com2026-04-07 → 2026-05-09 · 2 obs
● 2026-05-09 16:27:00
●NShazel.ns.cloudflare.com2026-04-07 → 2026-05-09 · 2 obs
● 2026-05-09 16:27:00
○NSns1.nowcndns.com2026-04-07 → 2026-05-09 · 2 obs
○ 2026-05-09 16:27:00
○NSns2.nowcndns.com2026-04-07 → 2026-05-09 · 2 obs
○ 2026-05-09 16:27:00
●A104.21.82.2272026-04-07 → 2026-05-09 · 2 obs
● 2026-05-09 16:27:00
○A154.212.246.412026-04-07 → 2026-05-09 · 2 obs
○ 2026-05-09 16:27:00
●A172.67.164.1532026-04-07 → 2026-05-09 · 2 obs
● 2026-05-09 16:27:00
●A2606:4700:3030::ac43:a4992026-04-07 → 2026-05-09 · 2 obs
● 2026-05-09 16:27:00
●A2606:4700:3033::6815:52e32026-04-07 → 2026-05-09 · 2 obs
● 2026-05-09 16:27:00
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| cn | a.dns.cn, c.dns.cn, d.dns.cn, e.dns.cn... | - |
| 21-zz.cn | hazel.ns.cloudflare.com, dakota.ns.cloudflare.com | - |
✅ Authoritative Response
Server:162.159.38.157
NS records: hazel.ns.cloudflare.com, dakota.ns.cloudflare.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for 21-zz.cn (unsigned zone)
⏱️ Timing
Total: 762ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 2 | 104.21.82.227, 172.67.164.153 |
| AAAA | 2 | 2606:4700:3033::6815:52e3, 2606:4700:3030::ac43:a499 |
| NS | 2 | dakota.ns.cloudflare.com, hazel.ns.cloudflare.com |
| HTTPS | 1 | {"priority":1,"target":".","alpn":["h3", |
| SOA | 1 | dakota.ns.cloudflare.com dns.cloudflare. |
Analysis
Hierarchy
21-zz.cn is the parent of www.21-zz.cn.
IP Addresses
Four IP numbers are pointed to by 21-zz.cn: 2606:4700:3030::ac43:a499, 2606:4700:3033::6815:52e3, 104.21.82.227 and 172.67.164.153.
other host names including status.cloudi.ee, cardverify0891-booking.com, soxyc-poda.online, tkclub1.com and mail.selo.org.ua share IP numbers with 21-zz.cn.
Name Servers
21-zz.cn is delegated to two name servers dakota.ns.cloudflare.com and hazel.ns.cloudflare.com.
21-zz.cn shares the same name server setup as other domains, for instance wsdog.cn, 028bbs.cn, cinoblue.com, lcmlx.com and folkinchina.com.
21-zz.cn at least partially shares name servers with other domains, for instance locusprime.net, monopolybigballerbn.com, cherubim.biz, pizzariasdelivery.click and therodmanlawgroup.com.
these name servers are commonly used alongside nadia.ns.cloudflare.com.
Host names with six IP numbers:
Host name dakota.ns.cloudflare.com points to: 2606:4700:58::a29f:2c4f, 2803:f800:50::6ca2:c34f, 2a06:98c1:50::ac40:234f, 108.162.195.79, 162.159.44.79 and 172.64.35.79.
Host name hazel.ns.cloudflare.com points to: 2606:4700:50::a29f:269d, 2803:f800:50::6ca2:c29d, 2a06:98c1:50::ac40:229d, 108.162.194.157, 162.159.38.157 and 172.64.34.157.