klassebogen.dk

📜 Historical scan 2026-10-13 01:43:34  ·  ← 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   29ms
NameserverIP addressesPTRASN / 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   29ms
IPTTLPTRASNISP / OrgCIDRCountryCity
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   26ms
PriorityTTLMail ServerIP addressesPTRASN
10 3600s work-mx.app.hey.com 64.202.125.68 work-mx.app.hey.com AS25657 Basecamp, LLC

🔷 AAAA Records (IPv6)#

2 records   28ms
IPv6 AddressTTLPTRASNISP / OrgCIDRCountryCity
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   29ms
PriorityTargetSvcParams
1 service . alpn="h3,h2" ipv4hint=104.21.11.88,172.67.165.177 ech=AEX+DQBB0AAgACBQLyNM4WIIc71mTXjK3ynKUxnPZR4u7rt59QVjYn7/JgAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3034::6815:b58,2606:4700:3036::ac43:a5b1

📝 TXT Records#

2 records   173ms
TXT Record
hey-verification:PpwMpB9LjxsoiufokJEYrtY6
v=spf1 include:_spf.hey.com ~all

✉️ SPF#

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

📨 DMARC#

PolicyRecord (_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
www104.21.11.88 172.67.165.177 2606:4700:3034::6815:b58 2606:4700:3036::ac43:a5b1 (AS13335) (address records, no CNAME)
www vs bare domainSame network
WildcardNo
Denial of existenceCompact NSEC (RFC 9824, "black lies") not walkable
CDS / CDNSKEYPublished: 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

🔏 ACME Challenge#

TypeNameValue
TXT _acme-challenge.klassebogen.dk EAysZmDqp-xZDr87A3b02MleABFZBWhnKUWdDxAeVXY
TXT _acme-challenge.klassebogen.dk l0Ud8Q7uxTVA8CEcfH8s-j3D_JdQYgHZ5UpKgWAiU_A

🔗 TLSA / DANE#

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

🔐 DNSSEC#

61ms
CheckResult
Validation Status🔒 Secure
AD Flag (resolver validates)✓ Set
DS Record✓ Found
DNSKEY Record✓ Found
Flagsfully validated

🏷️ SOA#

35ms
FieldValue
Serial2417319764
Primary NS (MNAME)aliza.ns.cloudflare.com
Responsible (RNAME)dns@cloudflare.com
Refresh10000s
Retry2400s
Expire604800s
Minimum (neg-cache TTL)1800s

📋 Registration#

WHOIS fetched 2026-10-12 01:34:18
FieldValue
RegistrarPunktum dk A/S (direct)
Registered2023-06-28
Expires2027-06-27 (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).

DomainRegistrar
bowerbirds.dkPunktum dk A/S (direct)
📋 WHOIS#

⏱️ Lookup Timing#

NS
29ms
A
29ms
MX
26ms
AAAA
28ms
TXT
173ms
CAA
27ms
HTTPS
29ms
TLSA
90ms
SOA
35ms
MTA-STS
54ms
DNSSEC
61ms
SRV
53ms
Total
488ms

🕐 Scan History#

Scanned AtDurationRecordsDNSSEC
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 shown 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 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
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