coswork.cyou - robtex.com
coswork.cyou
| DNSSEC | ⚠️ Not signed | ||||||
| A | 2606:4700:3031::ac43:d188🇺🇸 Cloudflare2606:4700:3031::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 2606:4700:3036::6815:52f1🇺🇸 Cloudflare2606:4700:3036::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 104.21.82.241Cloudflare104.21.80.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 172.67.209.136🇺🇸 Cloudflare172.67.208.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| NS | ned.ns.cloudflare.com ⭐ | ||||||
| A | 2606:4700:58::adf5:3bd2🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | ned.ns.cloudflare.com | ||||||
| A | 2803:f800:50::6ca2:c1d2🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L | ||||||
| PTR | ned.ns.cloudflare.com | ||||||
| A | 2a06:98c1:50::ac40:21d2🇺🇸 Cloudflare2a06:98c1:50::/45 | ||||||
| PTR | ned.ns.cloudflare.com | ||||||
| A | 108.162.193.210🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | ned.ns.cloudflare.com | ||||||
| A | 172.64.33.210🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | ned.ns.cloudflare.com | ||||||
| A | 173.245.59.210🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | ned.ns.cloudflare.com | ||||||
| NS | sierra.ns.cloudflare.com | ||||||
| A | 2606:4700:50::a29f:26f5🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | sierra.ns.cloudflare.com | ||||||
| A | 2803:f800:50::6ca2:c2f5🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L | ||||||
| PTR | sierra.ns.cloudflare.com | ||||||
| A | 2a06:98c1:50::ac40:22f5🇺🇸 Cloudflare2a06:98c1:50::/45 | ||||||
| PTR | sierra.ns.cloudflare.com | ||||||
| A | 108.162.194.245🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | sierra.ns.cloudflare.com | ||||||
| A | 162.159.38.245Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | sierra.ns.cloudflare.com | ||||||
| A | 172.64.34.245🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | sierra.ns.cloudflare.com | ||||||
| TXT | google-site-verification=3zMWRceAeWpUPqolX80ixPF4hQRX1q7PWXWXTjESPK4 | ||||||
| HTTPS | HTTP/3, HTTP/2 ✓ hints match | ||||||
| IPv4 hints | 104.21.82.241, 172.67.209.136 | ||||||
| IPv6 hints | 2606:4700:3031::ac43:d188, 2606:4700:3036::6815:52f1 | ||||||
| ECH | X25519, HKDF-SHA256 + AES-128-GCM draft, id=127, name=cloudflare-ech.com | ||||||
| SOA | ned.ns.cloudflare.comdns@cloudflare.com serial=2398579312 | ||||||
cyou
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | ns0.centralnic.net ⭐ | ||||||
| NS | a.nic.cyou | ||||||
| NS | b.nic.cyou | ||||||
| NS | c.nic.cyou | ||||||
| NS | d.nic.cyou | ||||||
| SOA | ns0.centralnic.nethostmaster@centralnic.net serial=1776200616 | ||||||
Same first word
Similar names
DNS History
6 records (6 active, 0 former)
●NSned.ns.cloudflare.com2026-03-29 → 2026-04-14 · 2 obs
● 2026-04-14 21:09:10
●NSsierra.ns.cloudflare.com2026-03-29 → 2026-04-14 · 2 obs
● 2026-04-14 21:09:10
●A104.21.82.2412026-03-29 → 2026-04-14 · 2 obs
● 2026-04-14 21:09:10
●A172.67.209.1362026-03-29 → 2026-04-14 · 2 obs
● 2026-04-14 21:09:10
●A2606:4700:3031::ac43:d1882026-03-29 → 2026-04-14 · 2 obs
● 2026-04-14 21:09:10
●A2606:4700:3036::6815:52f12026-03-29 → 2026-04-14 · 2 obs
● 2026-04-14 21:09:10
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| cyou | a.nic.cyou, b.nic.cyou, c.nic.cyou, d.nic.cyou | 8 records |
| coswork.cyou | ned.ns.cloudflare.com, sierra.ns.cloudflare.com | - |
✅ Authoritative Response
Server:173.245.59.210
NS records: ned.ns.cloudflare.com, sierra.ns.cloudflare.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for coswork.cyou (unsigned zone)
⏱️ Timing
Total: 587ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 2 | 172.67.209.136, 104.21.82.241 |
| AAAA | 2 | 2606:4700:3036::6815:52f1, 2606:4700:3031::ac43:d188 |
| NS | 2 | ned.ns.cloudflare.com, sierra.ns.cloudflare.com |
| TXT | 1 | google-site-verification=3zMWRceAeWpUPqo |
| HTTPS | 1 | {"priority":1,"target":".","alpn":["h3", |
| SOA | 1 | ned.ns.cloudflare.com dns.cloudflare.com |
📌 Glue Records Collected
Total: 8
In-bailiwick: 8 (a.nic.cyou, a.nic.cyou, b.nic.cyou...)
Analysis
IP Addresses
coswork.cyou refers to four IP numbers: 2606:4700:3031::ac43:d188, 2606:4700:3036::6815:52f1, 104.21.82.241 and 172.67.209.136.
Other host names, for instance www.decisionclass.com, gugzgstdp04j84mm25tsxj97yn.561cq.com, qlhohcxc1g8w084457oneit9.561cq.com, remediation.co and frijola.shop share IP numbers with coswork.cyou.
Name Servers
coswork.cyou's delegation uses two name servers: ned.ns.cloudflare.com and sierra.ns.cloudflare.com.
coswork.cyou uses the same name server setup as other domains, such as antwerpdeclaration.org, antwerp-declaration.eu, crimsonguitars.com, futmachines.com and coswork.app.
coswork.cyou at least partially shares name servers with other domains, including hfscredit.com, dailyapnews.com, ps3t.net, alsefabakliyat.com and ntda.org.
These name servers are often used with josephine.ns.cloudflare.com and finley.ns.cloudflare.com.
Host names with six IP numbers:
ned.ns.cloudflare.com points to 2606:4700:58::adf5:3bd2, 2803:f800:50::6ca2:c1d2, 2a06:98c1:50::ac40:21d2, 108.162.193.210, 172.64.33.210 and 173.245.59.210.
sierra.ns.cloudflare.com points to 2606:4700:50::a29f:26f5, 2803:f800:50::6ca2:c2f5, 2a06:98c1:50::ac40:22f5, 108.162.194.245, 162.159.38.245 and 172.64.34.245.