web03.c-system.dk - robtex.com
web03.c-system.dk
| DNSSEC | ⚠️ Not signed | ||||||
| A | 2606:4700:3032::ac43:cc40🇺🇸 Cloudflare2606:4700:3032::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 2606:4700:3033::6815:555e🇺🇸 Cloudflare2606:4700:3033::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 104.21.85.94Cloudflare104.21.80.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 172.67.204.64🇺🇸 Cloudflare172.67.192.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| HTTPS | HTTP/3, HTTP/2 ✓ hints match | ||||||
| IPv4 hints | 104.21.85.94, 172.67.204.64 | ||||||
| IPv6 hints | 2606:4700:3032::ac43:cc40, 2606:4700:3033::6815:555e | ||||||
| ECH | X25519, HKDF-SHA256 + AES-128-GCM draft, id=205, name=cloudflare-ech.com | ||||||
c-system.dk
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| A | 2606:4700:3032::ac43:cc40🇺🇸 Cloudflare2606:4700:3032::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 2606:4700:3033::6815:555e🇺🇸 Cloudflare2606:4700:3033::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 104.21.85.94Cloudflare104.21.80.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 172.67.204.64🇺🇸 Cloudflare172.67.192.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| NS | autumn.ns.cloudflare.com ⭐ | ||||||
| NS | gabriel.ns.cloudflare.com | ||||||
| MX | csystem-dk0c.mail.protection.outlook.com ⭐ | ||||||
| TXT | v=spf1 a mx a:web01.c-system.dk a:windu.c-system.dk a:yoda.c-system.dk a:bb-8... | ||||||
| HTTPS | HTTP/3, HTTP/2 ✓ hints match | ||||||
| IPv4 hints | 104.21.85.94, 172.67.204.64 | ||||||
| IPv6 hints | 2606:4700:3032::ac43:cc40, 2606:4700:3033::6815:555e | ||||||
| ECH | X25519, HKDF-SHA256 + AES-128-GCM draft, id=205, name=cloudflare-ech.com | ||||||
| SOA | autumn.ns.cloudflare.comdns@cloudflare.com serial=2401295539 | ||||||
PTR for
Same first word
Similar names
DNS History
6 records (4 active, 2 former)
●A104.21.85.942026-02-17 → 2026-04-11 · 10 obs
● 2026-02-17 20:19:50
● 2026-03-08 05:34:52
○ 2026-03-10 07:19:00
● 2026-03-10 08:48:54
● 2026-03-17 01:29:00
○ 2026-03-19 10:07:34
● 2026-03-19 13:00:40
○ 2026-03-22 12:53:22
● 2026-03-22 15:29:42
● 2026-04-11 19:59:26
● 2026-03-08 05:34:52
○ 2026-03-10 07:19:00
● 2026-03-10 08:48:54
● 2026-03-17 01:29:00
○ 2026-03-19 10:07:34
● 2026-03-19 13:00:40
○ 2026-03-22 12:53:22
● 2026-03-22 15:29:42
● 2026-04-11 19:59:26
○A172.64.80.12026-03-10 → 2026-03-22 · 9 obs
○ 2026-03-08 05:34:52
● 2026-03-10 07:19:00
○ 2026-03-10 08:48:54
○ 2026-03-17 01:29:00
● 2026-03-19 10:07:34
○ 2026-03-19 13:00:40
● 2026-03-22 12:53:22
○ 2026-03-22 15:29:42
○ 2026-04-11 19:59:26
● 2026-03-10 07:19:00
○ 2026-03-10 08:48:54
○ 2026-03-17 01:29:00
● 2026-03-19 10:07:34
○ 2026-03-19 13:00:40
● 2026-03-22 12:53:22
○ 2026-03-22 15:29:42
○ 2026-04-11 19:59:26
●A172.67.204.642026-02-17 → 2026-04-11 · 10 obs
● 2026-02-17 20:19:50
● 2026-03-08 05:34:52
○ 2026-03-10 07:19:00
● 2026-03-10 08:48:54
● 2026-03-17 01:29:00
○ 2026-03-19 10:07:34
● 2026-03-19 13:00:40
○ 2026-03-22 12:53:22
● 2026-03-22 15:29:42
● 2026-04-11 19:59:26
● 2026-03-08 05:34:52
○ 2026-03-10 07:19:00
● 2026-03-10 08:48:54
● 2026-03-17 01:29:00
○ 2026-03-19 10:07:34
● 2026-03-19 13:00:40
○ 2026-03-22 12:53:22
● 2026-03-22 15:29:42
● 2026-04-11 19:59:26
○A2606:4700:130:436c:6f75:6466:6c61:72652026-03-10 → 2026-03-22 · 9 obs
○ 2026-03-08 05:34:52
● 2026-03-10 07:19:00
○ 2026-03-10 08:48:54
○ 2026-03-17 01:29:00
● 2026-03-19 10:07:34
○ 2026-03-19 13:00:40
● 2026-03-22 12:53:22
○ 2026-03-22 15:29:42
○ 2026-04-11 19:59:26
● 2026-03-10 07:19:00
○ 2026-03-10 08:48:54
○ 2026-03-17 01:29:00
● 2026-03-19 10:07:34
○ 2026-03-19 13:00:40
● 2026-03-22 12:53:22
○ 2026-03-22 15:29:42
○ 2026-04-11 19:59:26
●A2606:4700:3032::ac43:cc402026-02-17 → 2026-04-11 · 10 obs
● 2026-02-17 20:19:50
● 2026-03-08 05:34:52
○ 2026-03-10 07:19:00
● 2026-03-10 08:48:54
● 2026-03-17 01:29:00
○ 2026-03-19 10:07:34
● 2026-03-19 13:00:40
○ 2026-03-22 12:53:22
● 2026-03-22 15:29:42
● 2026-04-11 19:59:26
● 2026-03-08 05:34:52
○ 2026-03-10 07:19:00
● 2026-03-10 08:48:54
● 2026-03-17 01:29:00
○ 2026-03-19 10:07:34
● 2026-03-19 13:00:40
○ 2026-03-22 12:53:22
● 2026-03-22 15:29:42
● 2026-04-11 19:59:26
●A2606:4700:3033::6815:555e2026-02-17 → 2026-04-11 · 10 obs
● 2026-02-17 20:19:50
● 2026-03-08 05:34:52
○ 2026-03-10 07:19:00
● 2026-03-10 08:48:54
● 2026-03-17 01:29:00
○ 2026-03-19 10:07:34
● 2026-03-19 13:00:40
○ 2026-03-22 12:53:22
● 2026-03-22 15:29:42
● 2026-04-11 19:59:26
● 2026-03-08 05:34:52
○ 2026-03-10 07:19:00
● 2026-03-10 08:48:54
● 2026-03-17 01:29:00
○ 2026-03-19 10:07:34
● 2026-03-19 13:00:40
○ 2026-03-22 12:53:22
● 2026-03-22 15:29:42
● 2026-04-11 19:59:26
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| dk | c.nic.dk, s.nic.dk, t.nic.dk, b.nic.dk... | - |
| c-system.dk | autumn.ns.cloudflare.com, gabriel.ns.cloudflare.com | - |
✅ Authoritative Response
Server:108.162.194.148
NS records: autumn.ns.cloudflare.com, gabriel.ns.cloudflare.com
🔒 DNSSEC Status
🔐 Secure (DNSSEC validated)
Chain of trust verified from root to domain
⏱️ Timing
Total: 198ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 2 | 172.67.204.64, 104.21.85.94 |
| AAAA | 2 | 2606:4700:3033::6815:555e, 2606:4700:3032::ac43:cc40 |
| HTTPS | 1 | {"priority":1,"target":".","alpn":["h3", |
Analysis
IP Addresses
web03.c-system.dk points to four IP numbers: 2606:4700:3032::ac43:cc40, 2606:4700:3033::6815:555e, 104.21.85.94 and 172.67.204.64.
For instance, other host names vvro.net, www.revistaeutomia.com.br, caglagold.com, twocitiesconservatives.org.uk and zenithanalyticsmax.sbs share IP numbers with web03.c-system.dk.