cstel.dk

📜 Historical scan 2026-10-17 03:22:32 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

cstel.dk is a .dk domain served by 2 nameservers (jihoon.ns.cloudflare.com, martha.ns.cloudflare.com). It was registered on 27 July 2021 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.82.91 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by .. The zone is not DNSSEC-signed, publishes a DMARC policy and is reachable over IPv6. Below are all of its DNS records from this scan: nameservers, A/AAAA, MX, TXT, SPF, DMARC, CAA, TLSA/DANE, MTA-STS, SRV and more.

🖥️ Nameservers#

2 records 39ms

Nameserver	IP addresses	PTR	ASN / ISP
jihoon.ns.cloudflare.com	108.162.195.233 162.159.44.233 172.64.35.233 2606:4700:58::a29f:2ce9 2803:f800:50::6ca2:c3e9 2a06:98c1:50::ac40:23e9	jihoon.ns.cloudflare.com jihoon.ns.cloudflare.com jihoon.ns.cloudflare.com jihoon.ns.cloudflare.com jihoon.ns.cloudflare.com jihoon.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
martha.ns.cloudflare.com	108.162.194.142 162.159.38.142 172.64.34.142 2606:4700:50::a29f:268e 2803:f800:50::6ca2:c28e 2a06:98c1:50::ac40:228e	martha.ns.cloudflare.com martha.ns.cloudflare.com martha.ns.cloudflare.com martha.ns.cloudflare.com martha.ns.cloudflare.com martha.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.

🌍 A Records#

2 records 32ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.21.82.91	300s	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.167.247	300s	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records#

1 records 27ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	300s	. Null MX — domain accepts no email (RFC 7505)

📧 Autodiscover / Autoconfig#

Service	CNAME / IP
🔷 Autodiscover	ae-east.cstel.dk → 213.83.187.140
🔶 Autoconfig	ae-east.cstel.dk → 213.83.187.140

🔷 AAAA Records (IPv6)#

2 records 32ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3031::ac43:a7f7	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3035::6815:525b	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records#

1 records 36ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.82.91,172.67.167.247 ech=AEX+DQBBmAAgACAs4g2z8/5Dxj0mFrIVJjW8M+lDeOjMiIHWBPfDl7MQEwAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3031::ac43:a7f7,2606:4700:3035::6815:525b

📝 TXT Records#

1 records 150ms

TXT Record
v=spf1 -all

✉️ SPF#

Policy	Record (cstel.dk)
-all (hard fail)	v=spf1 -all

📨 DMARC#

Policy	Record (_dmarc.cstel.dk)
p=reject	v=DMARC1; p=reject; sp=reject; adkim=s; aspf=s;

📬 MTA-STS#

✗ No MTA-STS policy — SMTP TLS not enforced

📈 TLSRPT#

✗ No TLSRPT record — no SMTP TLS failure reporting

📜 CAA Records#

✗ No CAA records — any CA may issue certificates

🧩 Web & zone#

latest probe, not this scan · checked 2026-10-19 04:45:26

www	104.21.82.91 172.67.167.247 2606:4700:3031::ac43:a7f7 2606:4700:3035::6815:525b (AS13335) (address records, no CNAME)
www vs bare domain	Same network cstel.dk: 104.21.82.91 172.67.167.247 2606:4700:3031::ac43:a7f7 2606:4700:3035::6815:525b (AS13335) www.cstel.dk: 104.21.82.91 172.67.167.247 2606:4700:3031::ac43:a7f7 2606:4700:3035::6815:525b (AS13335)
Wildcard	Yes: any name under the zone resolves

🔎 SPF check#

zone-wide SPF report

DNS lookups: 0/10 · policy: -all

No problems found

🔏 ACME Challenge#

Type	Name	Value
CNAME	_acme-challenge.cstel.dk	ae-east.cstel.dk

🔗 TLSA / DANE#

✗ No TLSA records — DANE not configured for HTTPS (_443) or MX (_25)

🔐 DNSSEC#

60ms

Check	Result
Validation Status	🔓 Insecure
AD Flag (resolver validates)	✗ Not set
DS Record	✗ Not found
DNSKEY Record	✗ Not found
Flags	unsigned answer

🏷️ SOA#

33ms

Field	Value
Serial	2417640751
Primary NS (MNAME)	jihoon.ns.cloudflare.com
Responsible (RNAME)	dns@cloudflare.com
Refresh	10000s
Retry	2400s
Expire	604800s
Minimum (neg-cache TTL)	1800s

📋 Registration#

WHOIS fetched 2026-10-19 05:06:54

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2021-07-27
Expires	2031-07-31 (1746d)

🔗 Same registrant#

6 domains

Other .dk domains whose WHOIS registrant has the same name and postal address. Matched on a keyed hash: the registrant's details are not stored or shown. Covers only domains whose WHOIS we have fetched (refreshed about monthly).

Domain	Registrar
caresolutions.dk	Punktum dk A/S (direct)
cm9.dk	Punktum dk A/S (direct)
connectall.dk	Punktum dk A/S (direct)
connectcom.dk	Punktum dk A/S (direct)
cstele.dk	Punktum dk A/S (direct)
omstillingsbordet.dk	Punktum dk A/S (direct)

📋 WHOIS#

⏱️ Lookup Timing#

39ms

32ms

27ms

AAAA

32ms

TXT

150ms

CAA

33ms

HTTPS

36ms

TLSA

49ms

SOA

33ms

MTA-STS

51ms

DNSSEC

60ms

SRV

54ms

Total

447ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-19 04:45:26	2284ms	2 NS 2 A 1 MX	🔓 Insecure
2026-10-17 03:22:32 shown	447ms	2 NS 2 A 1 MX	🔓 Insecure
2026-10-09 13:49:20	542ms	2 NS 2 A 1 MX	🔓 Insecure
2026-09-30 23:21:33	691ms	2 NS 2 A 1 MX	🔓 Insecure
2026-09-30 08:13:06	526ms	2 NS 2 A 1 MX	🔓 Insecure
2026-09-27 12:33:53	679ms	2 NS 2 A 1 MX	🔓 Insecure
2026-09-18 12:36:21	3271ms	2 NS 2 A 1 MX	🔓 Insecure
2026-09-11 11:52:52	1958ms	2 NS 2 A 1 MX	🔓 Insecure
2026-09-04 09:20:15	2695ms	2 NS 2 A 1 MX	🔓 Insecure
2026-08-19 04:34:24	3792ms	2 NS 2 A 1 MX	🔓 Insecure
2026-08-01 21:19:24	726ms	2 NS 2 A 1 MX	🔓 Insecure
2026-07-20 14:05:45	892ms	2 NS 2 A 1 MX	🔓 Insecure
2026-07-19 04:53:41	2119ms	2 NS 2 A 1 MX	🔓 Insecure
2026-07-16 16:42:24	968ms	2 NS 2 A 1 MX	🔓 Insecure
2026-07-14 19:24:17	916ms	2 NS 2 A 1 MX	🔓 Insecure
2026-07-03 11:42:03	1250ms	2 NS 2 A 1 MX	🔓 Insecure
2026-06-26 04:12:08	1147ms	2 NS 2 A 1 MX	🔓 Insecure
2026-06-19 22:35:31	2950ms	2 NS 2 A 1 MX	🔓 Insecure
2026-06-16 23:06:28	481ms	2 NS 2 A 0 MX	🔓 Insecure