z4257.cn - robtex.com
z4257.cn
| DNSSEC | ⚠️ Not signed | ||||||
| A | 2606:4700:3031::6815:39db🇺🇸 Cloudflare2606:4700:3031::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 2606:4700:3035::ac43:c073🇺🇸 Cloudflare2606:4700:3035::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 104.21.57.219Cloudflare104.21.48.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 172.67.192.115🇺🇸 Cloudflare172.67.192.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| NS | ajay.ns.cloudflare.com ⭐ | ||||||
| A | 2606:4700:58::adf5:3b38🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | ajay.ns.cloudflare.com | ||||||
| A | 2803:f800:50::6ca2:c138🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L | ||||||
| PTR | ajay.ns.cloudflare.com | ||||||
| A | 2a06:98c1:50::ac40:2138🇺🇸 Cloudflare2a06:98c1:50::/45 | ||||||
| PTR | ajay.ns.cloudflare.com | ||||||
| A | 108.162.193.56🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | ajay.ns.cloudflare.com | ||||||
| A | 172.64.33.56🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | ajay.ns.cloudflare.com | ||||||
| A | 173.245.59.56🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | ajay.ns.cloudflare.com | ||||||
| NS | olivia.ns.cloudflare.com | ||||||
| A | 2606:4700:50::a29f:26dd🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | olivia.ns.cloudflare.com | ||||||
| A | 2803:f800:50::6ca2:c2dd🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L | ||||||
| PTR | olivia.ns.cloudflare.com | ||||||
| A | 2a06:98c1:50::ac40:22dd🇺🇸 Cloudflare2a06:98c1:50::/45 | ||||||
| PTR | olivia.ns.cloudflare.com | ||||||
| A | 108.162.194.221🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | olivia.ns.cloudflare.com | ||||||
| A | 162.159.38.221Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | olivia.ns.cloudflare.com | ||||||
| A | 172.64.34.221🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | olivia.ns.cloudflare.com | ||||||
| HTTPS | HTTP/3, HTTP/2 ✓ hints match | ||||||
| IPv4 hints | 104.21.57.219, 172.67.192.115 | ||||||
| IPv6 hints | 2606:4700:3031::6815:39db, 2606:4700:3035::ac43:c073 | ||||||
| ECH | X25519, HKDF-SHA256 + AES-128-GCM draft, id=137, name=cloudflare-ech.com | ||||||
| SOA | ajay.ns.cloudflare.comdns@cloudflare.com serial=2400043486 | ||||||
cn
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| 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=2034782670 | ||||||
Subdomains
www.z4257.cn |
Same first word
z4257.cn |
DNS History
6 records (6 active, 0 former)
●NSajay.ns.cloudflare.com2026-03-28 → 2026-05-12 · 2 obs
● 2026-05-12 11:40:04
●NSolivia.ns.cloudflare.com2026-03-28 → 2026-05-12 · 2 obs
● 2026-05-12 11:40:04
●A104.21.57.2192026-03-28 → 2026-05-12 · 2 obs
● 2026-05-12 11:40:04
●A172.67.192.1152026-03-28 → 2026-05-12 · 2 obs
● 2026-05-12 11:40:04
●A2606:4700:3031::6815:39db2026-03-28 → 2026-05-12 · 2 obs
● 2026-05-12 11:40:04
●A2606:4700:3035::ac43:c0732026-03-28 → 2026-05-12 · 2 obs
● 2026-05-12 11:40:04
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| cn | e.dns.cn, a.dns.cn, c.dns.cn, d.dns.cn... | - |
| z4257.cn | ajay.ns.cloudflare.com, olivia.ns.cloudflare.com | - |
✅ Authoritative Response
Server:173.245.59.56
NS records: ajay.ns.cloudflare.com, olivia.ns.cloudflare.com
🔒 DNSSEC Status
❌ Bogus (DNSSEC validation failed)
Validation error at z4257.cn: Error: DNS query timeout: 203.119.29.1 for DS z4257.cn
⏱️ Timing
Total: 3908ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 2 | 172.67.192.115, 104.21.57.219 |
| AAAA | 2 | 2606:4700:3031::6815:39db, 2606:4700:3035::ac43:c073 |
| NS | 2 | ajay.ns.cloudflare.com, olivia.ns.cloudflare.com |
| HTTPS | 1 | {"priority":1,"target":".","alpn":["h3", |
| SOA | 1 | ajay.ns.cloudflare.com dns.cloudflare.co |
Analysis
Hierarchy
z4257.cn is the parent of www.z4257.cn.
IP Addresses
z4257.cn resolves to four IP numbers: 2606:4700:3031::6815:39db, 2606:4700:3035::ac43:c073, 104.21.57.219 and 172.67.192.115.
other host names for instance us.adirondacklifeftp.com, e-entrepreneurs.org, 999086.com, www.tnaonline.org and e85b6bf2.com share IP numbers with z4257.cn.
Name Servers
z4257.cn is delegated to two name servers: ajay.ns.cloudflare.com and olivia.ns.cloudflare.com.
z4257.cn shares the same name server setup as other domains, for example 81211.cn, t8254.cn, nrso.cn, d6375.cn and shlhjs.cn.
z4257.cn at least partially shares name servers with other domains, for instance zgnpayxw.cc, ris-e247media.click, hkjizdi.xyz, sahdfgngdn.click and 00xo.com.
These name servers are often used with peyton.ns.cloudflare.com and paityn.ns.cloudflare.com.
Host names with six IP numbers:
ajay.ns.cloudflare.com points to: 2606:4700:58::adf5:3b38, 2803:f800:50::6ca2:c138, 2a06:98c1:50::ac40:2138, 108.162.193.56, 172.64.33.56 and 173.245.59.56; olivia.ns.cloudflare.com points to: 2606:4700:50::a29f:26dd, 2803:f800:50::6ca2:c2dd, 2a06:98c1:50::ac40:22dd, 108.162.194.221, 162.159.38.221 and 172.64.34.221.