51xsw.cc - robtex.com
51xsw.cc
| DNSSEC | ⚠️ Not signed | ||||||
| A | 2606:4700:3030::6815:4c41🇺🇸 Cloudflare2606:4700:3030::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 2606:4700:3030::ac43:beee🇺🇸 Cloudflare2606:4700:3030::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 104.21.76.65Cloudflare104.21.64.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 172.67.190.238🇺🇸 Cloudflare172.67.176.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| NS | buck.ns.cloudflare.com ⭐ | ||||||
| A | 2606:4700:58::adf5:3b4e🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | buck.ns.cloudflare.com | ||||||
| A | 2803:f800:50::6ca2:c14e🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L | ||||||
| PTR | buck.ns.cloudflare.com | ||||||
| A | 2a06:98c1:50::ac40:214e🇺🇸 Cloudflare2a06:98c1:50::/45 | ||||||
| PTR | buck.ns.cloudflare.com | ||||||
| A | 108.162.193.78🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | buck.ns.cloudflare.com | ||||||
| A | 172.64.33.78🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | buck.ns.cloudflare.com | ||||||
| A | 173.245.59.78🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | buck.ns.cloudflare.com | ||||||
| NS | vivienne.ns.cloudflare.com | ||||||
| A | 2606:4700:50::a29f:2632🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | vivienne.ns.cloudflare.com | ||||||
| A | 2803:f800:50::6ca2:c232🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L | ||||||
| PTR | vivienne.ns.cloudflare.com | ||||||
| A | 2a06:98c1:50::ac40:2232🇺🇸 Cloudflare2a06:98c1:50::/45 | ||||||
| PTR | vivienne.ns.cloudflare.com | ||||||
| A | 108.162.194.50🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | vivienne.ns.cloudflare.com | ||||||
| A | 162.159.38.50Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | vivienne.ns.cloudflare.com | ||||||
| A | 172.64.34.50🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | vivienne.ns.cloudflare.com | ||||||
| HTTPS | HTTP/3, HTTP/2 ✓ hints match | ||||||
| IPv4 hints | 104.21.76.65, 172.67.190.238 | ||||||
| IPv6 hints | 2606:4700:3030::6815:4c41, 2606:4700:3030::ac43:beee | ||||||
| ECH | X25519, HKDF-SHA256 + AES-128-GCM draft, id=43, name=cloudflare-ech.com | ||||||
| SOA | buck.ns.cloudflare.comdns@cloudflare.com serial=2401707884 | ||||||
cc
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | ac1.nstld.com ⭐ | ||||||
| NS | ac2.nstld.com | ||||||
| NS | ac3.nstld.com | ||||||
| NS | ac4.nstld.com | ||||||
| SOA | ac1.nstld.cominfo@verisign-grs.com serial=1777139822 | ||||||
Same first word
Similar names
DNS History
6 records (6 active, 0 former)
●NSbuck.ns.cloudflare.com2026-04-20 → 2026-04-25 · 2 obs
● 2026-04-25 18:02:42
●NSvivienne.ns.cloudflare.com2026-04-20 → 2026-04-25 · 2 obs
● 2026-04-25 18:02:42
●A104.21.76.652026-04-20 → 2026-04-25 · 2 obs
● 2026-04-25 18:02:42
●A172.67.190.2382026-04-20 → 2026-04-25 · 2 obs
● 2026-04-25 18:02:42
●A2606:4700:3030::6815:4c412026-04-20 → 2026-04-25 · 2 obs
● 2026-04-25 18:02:42
●A2606:4700:3030::ac43:beee2026-04-20 → 2026-04-25 · 2 obs
● 2026-04-25 18:02:42
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| cc | ac2.nstld.com, ac4.nstld.com, ac1.nstld.com, ac3.nstld.com | - |
| 51xsw.cc | vivienne.ns.cloudflare.com, buck.ns.cloudflare.com | - |
✅ Authoritative Response
Server:172.64.33.78
NS records: vivienne.ns.cloudflare.com, buck.ns.cloudflare.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for 51xsw.cc (unsigned zone)
⏱️ Timing
Total: 366ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 2 | 172.67.190.238, 104.21.76.65 |
| AAAA | 2 | 2606:4700:3030::ac43:beee, 2606:4700:3030::6815:4c41 |
| NS | 2 | buck.ns.cloudflare.com, vivienne.ns.cloudflare.com |
| HTTPS | 1 | {"priority":1,"target":".","alpn":["h3", |
| SOA | 1 | buck.ns.cloudflare.com dns.cloudflare.co |
Analysis
IP Addresses
51xsw.cc refers to four IP numbers: 2606:4700:3030::6815:4c41, 2606:4700:3030::ac43:beee, 104.21.76.65 and 172.67.190.238.
Other host names, for instance fe.unissula.ac.id, 923uc.com, chetwood.co.uk, printwow.ca and www.jeuxjeux.fr share IP numbers with 51xsw.cc.
Name Servers
51xsw.cc's delegation uses two name servers: buck.ns.cloudflare.com and vivienne.ns.cloudflare.com.
51xsw.cc uses the same name server setup as other domains, such as shule.net, bqg.tw, zhaoxiaoshuo.net, biquxue.com and hqshu.com.
51xsw.cc at least partially shares name servers with other domains, including gsiplus.at, cimarronapts.com, virtua.com.tr, noxgpt.info and tasty-restaurants.co.uk.
These name servers are commonly used with james.ns.cloudflare.com.
Host names with six IP numbers:
buck.ns.cloudflare.com points to 2606:4700:58::adf5:3b4e, 2803:f800:50::6ca2:c14e, 2a06:98c1:50::ac40:214e, 108.162.193.78, 172.64.33.78 and 173.245.59.78.
vivienne.ns.cloudflare.com points to 2606:4700:50::a29f:2632, 2803:f800:50::6ca2:c232, 2a06:98c1:50::ac40:2232, 108.162.194.50, 162.159.38.50 and 172.64.34.50.