3781.cc - robtex.com
3781.cc
| DNSSEC | ⚠️ Not signed | ||||||
| A | 2606:4700:3032::6815:1d34🇺🇸 Cloudflare2606:4700:3032::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 2606:4700:3037::ac43:ab5e🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 104.21.29.52Cloudflare104.21.16.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 172.67.171.94🇺🇸 Cloudflare172.67.160.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| NS | logan.ns.cloudflare.com ⭐ | ||||||
| A | 2606:4700:58::adf5:3bc6🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | logan.ns.cloudflare.com | ||||||
| A | 2803:f800:50::6ca2:c1c6🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L | ||||||
| PTR | logan.ns.cloudflare.com | ||||||
| A | 2a06:98c1:50::ac40:21c6🇺🇸 Cloudflare2a06:98c1:50::/45 | ||||||
| PTR | logan.ns.cloudflare.com | ||||||
| A | 108.162.193.198🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | logan.ns.cloudflare.com | ||||||
| A | 172.64.33.198🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | logan.ns.cloudflare.com | ||||||
| A | 173.245.59.198🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | logan.ns.cloudflare.com | ||||||
| NS | sue.ns.cloudflare.com | ||||||
| A | 2606:4700:50::adf5:3a91🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | sue.ns.cloudflare.com | ||||||
| A | 2803:f800:50::6ca2:c091🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L | ||||||
| PTR | sue.ns.cloudflare.com | ||||||
| A | 2a06:98c1:50::ac40:2091🇺🇸 Cloudflare2a06:98c1:50::/45 | ||||||
| PTR | sue.ns.cloudflare.com | ||||||
| A | 108.162.192.145🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | sue.ns.cloudflare.com | ||||||
| A | 172.64.32.145🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | sue.ns.cloudflare.com | ||||||
| A | 173.245.58.145🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | sue.ns.cloudflare.com | ||||||
| MX | mx.extrementc.com ⭐ | ||||||
| HTTPS | HTTP/3, HTTP/2 ✓ hints match | ||||||
| IPv4 | 104.21.29.52, 172.67.171.94 | ||||||
| IPv6 | 2606:4700:3032::6815:1d34, 2606:4700:3037::ac43:ab5e | ||||||
| SOA | logan.ns.cloudflare.comdns@cloudflare.com serial=2396427960 | ||||||
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=1774173476 | ||||||
Same first word
Similar names
DNS History
7 records (7 active, 0 former)
●NSlogan.ns.cloudflare.com2026-03-19 → 2026-03-22 · 2 obs
● 2026-03-22 21:58:38
●NSsue.ns.cloudflare.com2026-03-19 → 2026-03-22 · 2 obs
● 2026-03-22 21:58:38
●MXmx.extrementc.com2026-03-19 → 2026-03-22 · 2 obs
● 2026-03-22 21:58:38
●A104.21.29.522026-03-19 → 2026-03-22 · 2 obs
● 2026-03-22 21:58:38
●A172.67.171.942026-03-19 → 2026-03-22 · 2 obs
● 2026-03-22 21:58:38
●A2606:4700:3032::6815:1d342026-03-19 → 2026-03-22 · 2 obs
● 2026-03-22 21:58:38
●A2606:4700:3037::ac43:ab5e2026-03-19 → 2026-03-22 · 2 obs
● 2026-03-22 21:58:38
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| cc | ac1.nstld.com, ac2.nstld.com, ac3.nstld.com, ac4.nstld.com | - |
| 3781.cc | sue.ns.cloudflare.com, logan.ns.cloudflare.com | - |
✅ Authoritative Response
Server: 172.64.32.145
NS records: sue.ns.cloudflare.com, logan.ns.cloudflare.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for 3781.cc (unsigned zone)
⏱️ Timing
Total: 890ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 2 | 172.67.171.94, 104.21.29.52 |
| AAAA | 2 | 2606:4700:3037::ac43:ab5e, 2606:4700:3032::6815:1d34 |
| NS | 2 | logan.ns.cloudflare.com, sue.ns.cloudflare.com |
| MX | 1 | mx.extrementc.com (pri: 1) |
| HTTPS | 1 | {"priority":1,"target":".","alpn":["h3", |
| SOA | 1 | logan.ns.cloudflare.com dns.cloudflare.c |
Analysis
IP Addresses
Four IP numbers are pointed to by 3781.cc: 2606:4700:3032::6815:1d34, 2606:4700:3037::ac43:ab5e, 104.21.29.52 and 172.67.171.94.
other host names including bu.vt-88.com, haitian56.com, mail.ges.net, loghomering.com and ochkitut.ru share IP numbers with 3781.cc.
Name Servers
3781.cc is delegated to two name servers logan.ns.cloudflare.com and sue.ns.cloudflare.com.
3781.cc shares the same name server setup as other domains, for instance crystalknows.com, synchronicityla.com, sinisterwheel.com, parameet.com and crys.io.
3781.cc at least partially shares name servers with other domains, for instance ks-i.com, arcpas.com, brockingjbooks.com, zjyaodian.com and faghihi.me.
These name servers are commonly used with cheryl.ns.cloudflare.com, jake.ns.cloudflare.com and adaline.ns.cloudflare.com.
Host names with six IP numbers:
Host name logan.ns.cloudflare.com points to: 2606:4700:58::adf5:3bc6, 2803:f800:50::6ca2:c1c6, 2a06:98c1:50::ac40:21c6, 108.162.193.198, 172.64.33.198 and 173.245.59.198.
Host name sue.ns.cloudflare.com points to: 2606:4700:50::adf5:3a91, 2803:f800:50::6ca2:c091, 2a06:98c1:50::ac40:2091, 108.162.192.145, 172.64.32.145 and 173.245.58.145.
Mail Servers
3781.cc is handled by a single mail server, mx.extrementc.com.
3781.cc shares the same mail server setup as other domains, for instance fy05.co, zs30.app, fy121.co, 9966972.com and blr28500.com.
3781.cc shares some mail servers with other domains, at least partially, for instance pc3737.com, fg28222.com, 006673.com, 2828833.com and blr28511.com.