klassebogen.dk

📜 Historical scan 2026-08-14 18:02:30 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

klassebogen.dk is a .dk domain served by 2 nameservers (aliza.ns.cloudflare.com, marty.ns.cloudflare.com). It was registered on 28 June 2023 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.11.88 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by work-mx.app.hey.com. The zone is DNSSEC-signed and validates, 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 222ms

Nameserver	IP addresses	PTR	ASN / ISP
aliza.ns.cloudflare.com	108.162.194.55 162.159.38.55 172.64.34.55 2606:4700:50::a29f:2637 2803:f800:50::6ca2:c237 2a06:98c1:50::ac40:2237	aliza.ns.cloudflare.com aliza.ns.cloudflare.com aliza.ns.cloudflare.com aliza.ns.cloudflare.com aliza.ns.cloudflare.com aliza.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
marty.ns.cloudflare.com	108.162.193.204 172.64.33.204 173.245.59.204 2606:4700:58::adf5:3bcc 2803:f800:50::6ca2:c1cc 2a06:98c1:50::ac40:21cc	marty.ns.cloudflare.com marty.ns.cloudflare.com marty.ns.cloudflare.com marty.ns.cloudflare.com marty.ns.cloudflare.com marty.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 266ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.21.11.88	300s	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.165.177	300s	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records#

1 records 242ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	3600s	work-mx.app.hey.com	64.202.125.68	work-mx.app.hey.com	AS25657 Basecamp, LLC

🔷 AAAA Records (IPv6)#

2 records 285ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3034::6815:b58	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3036::ac43:a5b1	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records#

1 records 240ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.11.88,172.67.165.177 ech=AEX+DQBBJgAgACDXNmMMVRhsdusY43ainQ4JFjyG5g7P+4HsiYEB0khZGAAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3034::6815:b58,2606:4700:3036::ac43:a5b1

📝 TXT Records#

2 records 680ms

TXT Record
hey-verification:PpwMpB9LjxsoiufokJEYrtY6
v=spf1 include:_spf.hey.com ~all

✉️ SPF#

Policy	Record (klassebogen.dk)
~all (soft fail)	v=spf1 include:_spf.hey.com ~all

📨 DMARC#

Policy	Record (_dmarc.klassebogen.dk)
p=none (monitor only)	v=DMARC1; p=none;

📬 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 2026-10-16 09:34:55

www	104.21.11.88 172.67.165.177 2606:4700:3034::6815:b58 2606:4700:3036::ac43:a5b1 (AS13335) (address records, no CNAME)
www vs bare domain	Same network klassebogen.dk: 104.21.11.88 172.67.165.177 2606:4700:3034::6815:b58 2606:4700:3036::ac43:a5b1 (AS13335) www.klassebogen.dk: 104.21.11.88 172.67.165.177 2606:4700:3034::6815:b58 2606:4700:3036::ac43:a5b1 (AS13335)
Wildcard	No
Denial of existence	Compact NSEC (RFC 9824, "black lies") not walkable
CDS / CDNSKEY	Published: key rollovers can be automated with the registry (RFC 7344/8078) 1 CDS, 1 CDNSKEY

🔎 SPF check#

zone-wide SPF report

DNS lookups: 1/10 · policy: ~all

No problems found

🔗 TLSA / DANE#

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

🔐 DNSSEC#

487ms

Check	Result
Validation Status	🔒 Secure
AD Flag (resolver validates)	✓ Set
DS Record	✓ Found
DNSKEY Record	✓ Found
Flags	fully validated

🏷️ SOA#

0ms

Field	Value
Serial	2412124002
Primary NS (MNAME)	aliza.ns.cloudflare.com
Responsible (RNAME)	dns@cloudflare.com
Refresh	10000s
Retry	2400s
Expire	604800s
Minimum (neg-cache TTL)	1800s

📋 Registration#

WHOIS fetched 2026-10-12 01:34:18

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2023-06-28
Expires	2027-06-27 (253d)

🔗 Same registrant#

1 domain

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
bowerbirds.dk	Punktum dk A/S (direct)

📋 WHOIS#

⏱️ Lookup Timing#

222ms

266ms

242ms

AAAA

285ms

TXT

680ms

CAA

257ms

HTTPS

240ms

TLSA

348ms

SOA

0ms

MTA-STS

344ms

DNSSEC

487ms

SRV

307ms

Total

4938ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-16 09:34:55	1259ms	2 NS 2 A 1 MX	🔒 Secure
2026-10-15 04:21:18	1240ms	2 NS 2 A 1 MX	🔒 Secure
2026-10-13 01:43:34	488ms	2 NS 2 A 1 MX	🔒 Secure
2026-10-12 01:13:27	2038ms	2 NS 2 A 1 MX	🔒 Secure
2026-10-09 14:21:20	891ms	2 NS 2 A 1 MX	🔒 Secure
2026-10-01 05:37:35	966ms	2 NS 2 A 1 MX	🔒 Secure
2026-09-15 20:08:43	833ms	2 NS 2 A 1 MX	🔒 Secure
2026-09-06 12:57:06	1446ms	2 NS 2 A 1 MX	🔒 Secure
2026-08-26 20:55:29	9776ms	2 NS 2 A 1 MX	🔒 Secure
2026-08-14 18:02:30 shown	4938ms	2 NS 2 A 1 MX	🔒 Secure
2026-07-21 05:49:16	1113ms	2 NS 2 A 1 MX	🔒 Secure
2026-07-18 00:16:06	1860ms	2 NS 2 A 1 MX	🔒 Secure
2026-07-01 19:33:00	1397ms	2 NS 2 A 1 MX	🔒 Secure
2026-06-22 00:41:38	522ms	2 NS 2 A 1 MX	🔒 Secure
2026-06-17 12:57:42	1021ms	2 NS 2 A 1 MX	🔒 Secure