cstel.dk

📜 Historical scan 2026-09-04 09:20:15 · ← 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 273ms

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 13ms

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 35ms

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

🔷 AAAA Records (IPv6)#

2 records 54ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2a06:98c1:3121::4	300s	—	AS13335	Cloudflare, Inc.	2a06:98c1:3120::/46	—	—
2a06:98c1:3120::4	300s	—	AS13335	Cloudflare, Inc.	2a06:98c1:3120::/46	—	—

🔐 HTTPS Records#

1 records 70ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=188.114.96.11,188.114.97.11 ech=AEX+DQBB+wAgACBnzCV/nKgOOJ17ds9vnRL9kehJR7odrnq10lDYEry0AQAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2a06:98c1:3120::b,2a06:98c1:3121::b

📝 TXT Records#

1 records 108ms

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#

199ms

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

🏷️ SOA#

35ms

Field	Value
Serial	2413680696
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 (1745d)

🔗 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#

273ms

13ms

35ms

AAAA

54ms

TXT

108ms

CAA

7ms

HTTPS

70ms

TLSA

36ms

SOA

35ms

MTA-STS

6ms

DNSSEC

199ms

SRV

0ms

Total

2695ms

🕐 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	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 shown	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