kthx.dk

📜 Historical scan 2026-10-13 07:22:03  ·  ← Latest scan
⬇ Zone File 📜 Timeline & History ⚡ Scan Now

kthx.dk is a .dk domain served by 2 nameservers (amy.ns.cloudflare.com, pete.ns.cloudflare.com). It was registered on 14 September 2007 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.82.11 is hosted by Cloudflare, Inc. (AS13335). 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   47ms
NameserverIP addressesPTRASN / ISP
amy.ns.cloudflare.com 108.162.192.101
172.64.32.101
173.245.58.101
2606:4700:50::adf5:3a65
2803:f800:50::6ca2:c065
2a06:98c1:50::ac40:2065		 amy.ns.cloudflare.com
amy.ns.cloudflare.com
amy.ns.cloudflare.com
amy.ns.cloudflare.com
amy.ns.cloudflare.com
amy.ns.cloudflare.com		 AS13335 Cloudflare, Inc.
AS13335 Cloudflare, Inc.
AS13335 Cloudflare, Inc.
AS13335 Cloudflare, Inc.
AS13335 Cloudflare, Inc.
AS13335 Cloudflare, Inc.
pete.ns.cloudflare.com 108.162.193.136
172.64.33.136
173.245.59.136
2606:4700:58::adf5:3b88
2803:f800:50::6ca2:c188
2a06:98c1:50::ac40:2188		 pete.ns.cloudflare.com
pete.ns.cloudflare.com
pete.ns.cloudflare.com
pete.ns.cloudflare.com
pete.ns.cloudflare.com
pete.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   36ms
IPTTLPTRASNISP / OrgCIDRCountryCity
104.21.82.11 300s — AS13335 Cloudflare, Inc. 104.21.0.0/17 — —
172.67.167.135 300s — AS13335 Cloudflare, Inc. 172.67.128.0/17 — —

📧 MX Records#

📧
No MX records found

📧 Autodiscover / Autoconfig#

ServiceCNAME / IP
🔷 Autodiscover104.21.82.11
🔶 Autoconfig104.21.82.11

🔷 AAAA Records (IPv6)#

2 records   41ms
IPv6 AddressTTLPTRASNISP / OrgCIDRCountryCity
2606:4700:3031::6815:520b 300s — AS13335 Cloudflare, Inc. 2606:4700:3000:0:0:0:0:0/42 — —
2606:4700:3034::ac43:a787 300s — AS13335 Cloudflare, Inc. 2606:4700:3000:0:0:0:0:0/42 — —

🔐 HTTPS Records#

1 records   36ms
PriorityTargetSvcParams
1 service . alpn="h3,h2" ipv4hint=104.21.82.11,172.67.167.135 ech=AEX+DQBBwQAgACBjaO3MMnpCPO/UxmrIwMMeE5TPjPLpO47U+eKV0BV2QAAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3031::6815:520b,2606:4700:3034::ac43:a787

📝 TXT Records#

1 records   193ms
TXT Record
v=spf1 -all

✉️ SPF#

PolicyRecord (kthx.dk)
-all (hard fail) v=spf1 -all

📨 DMARC#

PolicyRecord (_dmarc.kthx.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 2026-10-14 09:42:20
www104.21.82.11 172.67.167.135 2606:4700:3031::6815:520b 2606:4700:3034::ac43:a787 (AS13335) (address records, no CNAME)
www vs bare domainSame network
WildcardYes: any name under the zone resolves
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: 0/10 · policy: -all

No problems found

🔏 ACME Challenge#

TypeNameValue
TXT _acme-challenge.kthx.dk 4TKkg4ZgI0Cb-aDPKH6-pTP_R0nTzSA_B_rARj1oZJw
TXT _acme-challenge.kthx.dk nTWXXvDMVz0RPNvZObK8YqjwVbSzvBNTf4N_2I5G6sk
TXT _acme-challenge.kthx.dk zTB0w4p8CmskYGOYGg4vhIadzNvGKiykH8qh4S2TNTM

🔗 TLSA / DANE#

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

🔐 DNSSEC#

58ms
CheckResult
Validation Status🔒 Secure
AD Flag (resolver validates)✓ Set
DS Record✓ Found
DNSKEY Record✓ Found
Flagsfully validated

🏷️ SOA#

49ms
FieldValue
Serial2417308597
Primary NS (MNAME)amy.ns.cloudflare.com
Responsible (RNAME)dns@cloudflare.com
Refresh10000s
Retry2400s
Expire604800s
Minimum (neg-cache TTL)1800s

📋 Registration#

WHOIS fetched 2026-10-12 07:16:39
FieldValue
RegistrarPunktum dk A/S (direct)
Registered2007-09-14
Expires2027-10-31 (379d)

🔗 Same registrant#

3 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).

DomainRegistrar
flork.dkPunktum dk A/S (direct)
slopstack.dkPunktum dk A/S (direct)
snemarch.dkPunktum dk A/S (direct)
📋 WHOIS#

⏱️ Lookup Timing#

NS
47ms
A
36ms
MX
33ms
AAAA
41ms
TXT
193ms
CAA
35ms
HTTPS
36ms
TLSA
64ms
SOA
49ms
MTA-STS
54ms
DNSSEC
58ms
SRV
71ms
Total
495ms

🕐 Scan History#

Scanned AtDurationRecordsDNSSEC
2026-10-14 09:42:20 1448ms 2 NS 2 A 0 MX 🔒 Secure
2026-10-13 07:22:03 shown 495ms 2 NS 2 A 0 MX 🔒 Secure
2026-10-12 06:55:08 1737ms 2 NS 2 A 0 MX 🔒 Secure
2026-09-29 13:31:05 1039ms 2 NS 2 A 0 MX 🔒 Secure
2026-09-25 12:57:09 565ms 2 NS 2 A 0 MX 🔒 Secure
2026-09-03 16:00:25 1514ms 2 NS 2 A 0 MX 🔒 Secure
2026-08-13 19:31:59 962ms 2 NS 2 A 0 MX 🔒 Secure
2026-08-08 16:47:48 1031ms 2 NS 2 A 0 MX 🔒 Secure
2026-08-01 05:24:08 861ms 2 NS 2 A 0 MX 🔒 Secure
2026-07-16 10:25:45 912ms 2 NS 2 A 0 MX 🔒 Secure
2026-06-26 08:46:56 592ms 2 NS 2 A 0 MX 🔒 Secure
2026-06-20 15:45:49 458ms 2 NS 2 A 0 MX 🔒 Secure
2026-06-18 07:07:15 901ms 2 NS 2 A 0 MX 🔒 Secure
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