21891.top - robtex.com
21891.top
| DNSSEC | ⚠️ Not signed | ||||||
| A | 2606:4700:3030::6815:2349🇺🇸 Cloudflare2606:4700:3030::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 2606:4700:3036::ac43:d788🇺🇸 Cloudflare2606:4700:3036::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 104.21.35.73Cloudflare104.21.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 172.67.215.136🇺🇸 Cloudflare172.67.208.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| NS | roxy.ns.cloudflare.com ⭐ | ||||||
| A | 2606:4700:50::adf5:3a8e🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | roxy.ns.cloudflare.com | ||||||
| A | 2803:f800:50::6ca2:c08e🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L | ||||||
| PTR | roxy.ns.cloudflare.com | ||||||
| A | 2a06:98c1:50::ac40:208e🇺🇸 Cloudflare2a06:98c1:50::/45 | ||||||
| PTR | roxy.ns.cloudflare.com | ||||||
| A | 108.162.192.142🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | roxy.ns.cloudflare.com | ||||||
| A | 172.64.32.142🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | roxy.ns.cloudflare.com | ||||||
| A | 173.245.58.142🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | roxy.ns.cloudflare.com | ||||||
| NS | ruben.ns.cloudflare.com | ||||||
| A | 2606:4700:58::a29f:2c47🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | ruben.ns.cloudflare.com | ||||||
| A | 2803:f800:50::6ca2:c347🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L | ||||||
| PTR | ruben.ns.cloudflare.com | ||||||
| A | 2a06:98c1:50::ac40:2347🇺🇸 Cloudflare2a06:98c1:50::/45 | ||||||
| PTR | ruben.ns.cloudflare.com | ||||||
| A | 108.162.195.71🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | ruben.ns.cloudflare.com | ||||||
| A | 162.159.44.71Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | ruben.ns.cloudflare.com | ||||||
| A | 172.64.35.71🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | ruben.ns.cloudflare.com | ||||||
| HTTPS | HTTP/3, HTTP/2 ✓ hints match | ||||||
| IPv4 | 104.21.35.73, 172.67.215.136 | ||||||
| IPv6 | 2606:4700:3030::6815:2349, 2606:4700:3036::ac43:d788 | ||||||
| SOA | roxy.ns.cloudflare.comdns@cloudflare.com serial=2396983481 | ||||||
top
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | a.zdnscloud.com ⭐ | ||||||
| NS | a.zdnscloud.cn | ||||||
| NS | b.zdnscloud.cn | ||||||
| NS | c.zdnscloud.com | ||||||
| NS | d.zdnscloud.com | ||||||
| NS | f.zdnscloud.cn | ||||||
| NS | g.zdnscloud.com | ||||||
| NS | i.zdnscloud.cn | ||||||
| NS | j.zdnscloud.com | ||||||
| TXT | 2026-03-25_02:50:02 | ||||||
| SOA | a.zdnscloud.comtd_dns_gtld@knet.cn serial=1395351191 | ||||||
Same first word
Similar names
DNS History
6 records (6 active, 0 former)
●NSroxy.ns.cloudflare.com2026-03-11 → 2026-03-24 · 2 obs
● 2026-03-24 19:16:28
●NSruben.ns.cloudflare.com2026-03-11 → 2026-03-24 · 2 obs
● 2026-03-24 19:16:28
●A104.21.35.732026-03-11 → 2026-03-24 · 2 obs
● 2026-03-24 19:16:28
●A172.67.215.1362026-03-11 → 2026-03-24 · 2 obs
● 2026-03-24 19:16:28
●A2606:4700:3030::6815:23492026-03-11 → 2026-03-24 · 2 obs
● 2026-03-24 19:16:28
●A2606:4700:3036::ac43:d7882026-03-11 → 2026-03-24 · 2 obs
● 2026-03-24 19:16:28
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| top | a.zdnscloud.cn, b.zdnscloud.cn, c.zdnscloud.com, d.zdnscloud.com... | - |
| 21891.top | roxy.ns.cloudflare.com, ruben.ns.cloudflare.com | - |
✅ Authoritative Response
Server:108.162.192.142
NS records: roxy.ns.cloudflare.com, ruben.ns.cloudflare.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for 21891.top (unsigned zone)
⏱️ Timing
Total: 1240ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 2 | 172.67.215.136, 104.21.35.73 |
| AAAA | 2 | 2606:4700:3030::6815:2349, 2606:4700:3036::ac43:d788 |
| NS | 2 | roxy.ns.cloudflare.com, ruben.ns.cloudflare.com |
| HTTPS | 1 | {"priority":1,"target":".","alpn":["h3", |
| SOA | 1 | roxy.ns.cloudflare.com dns.cloudflare.co |
Analysis
IP Addresses
21891.top refers to four IP numbers: 2606:4700:3030::6815:2349, 2606:4700:3036::ac43:d788, 104.21.35.73 and 172.67.215.136.
Other host names, for instance superstream.org, watsonia.org.uk, masclientes.mx, www.shreeivfclinic.com and yuenengchina.com share IP numbers with 21891.top.
Name Servers
21891.top's delegation uses two name servers: roxy.ns.cloudflare.com and ruben.ns.cloudflare.com.
21891.top uses the same name server setup as other domains, such as 936966.cc, 176688.vip, 62038.xyz, 83590.cc and 777659kk.com.
21891.top at least partially shares name servers with other domains, including foodsanantonio.com, n-file.com, greatamericanfidelity.com, df912.com and buyvinylrecords.net.
These name servers are commonly used with mona.ns.cloudflare.com, anna.ns.cloudflare.com and pat.ns.cloudflare.com.
Host names with six IP numbers:
roxy.ns.cloudflare.com points to 2606:4700:50::adf5:3a8e, 2803:f800:50::6ca2:c08e, 2a06:98c1:50::ac40:208e, 108.162.192.142, 172.64.32.142 and 173.245.58.142.
ruben.ns.cloudflare.com points to 2606:4700:58::a29f:2c47, 2803:f800:50::6ca2:c347, 2a06:98c1:50::ac40:2347, 108.162.195.71, 162.159.44.71 and 172.64.35.71.