klausbaerentsen.dk

📜 Historical scan 2026-07-18 18:20:52  ·  ← Latest scan
⬇ Zone File 📜 Timeline & History ⚡ Scan Now

klausbaerentsen.dk is a .dk domain served by 2 nameservers (ray.ns.cloudflare.com, sue.ns.cloudflare.com). It was registered on 20 November 2020 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.29.36 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by mail.klausbaerentsen.dk. 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   161ms
NameserverIP addressesPTRASN / ISP
ray.ns.cloudflare.com 108.162.193.138
172.64.33.138
173.245.59.138
2606:4700:58::adf5:3b8a
2803:f800:50::6ca2:c18a
2a06:98c1:50::ac40:218a		 ray.ns.cloudflare.com
ray.ns.cloudflare.com
ray.ns.cloudflare.com
ray.ns.cloudflare.com
ray.ns.cloudflare.com
ray.ns.cloudflare.com		 AS13335 Cloudflare, Inc.
AS13335 Cloudflare, Inc.
AS13335 Cloudflare, Inc.
AS13335 Cloudflare, Inc.
AS13335 Cloudflare, Inc.
AS13335 Cloudflare, Inc.
sue.ns.cloudflare.com 108.162.192.145
172.64.32.145
173.245.58.145
2606:4700:50::adf5:3a91
2803:f800:50::6ca2:c091
2a06:98c1:50::ac40:2091		 sue.ns.cloudflare.com
sue.ns.cloudflare.com
sue.ns.cloudflare.com
sue.ns.cloudflare.com
sue.ns.cloudflare.com
sue.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   151ms
IPTTLPTRASNISP / OrgCIDRCountryCity
104.21.29.36 300s — AS13335 Cloudflare, Inc. 104.21.0.0/17 — —
172.67.171.76 300s — AS13335 Cloudflare, Inc. 172.67.128.0/17 — —

📧 MX Records#

1 records   198ms
PriorityTTLMail ServerIP addressesPTRASN
10 300s mail.klausbaerentsen.dk 107.6.136.42 amsr201.websitehostserver.net AS32475 Internap Holding LLC

🔷 AAAA Records (IPv6)#

2 records   190ms
IPv6 AddressTTLPTRASNISP / OrgCIDRCountryCity
2606:4700:3030::ac43:ab4c 300s — AS13335 Cloudflare, Inc. 2606:4700:3000:0:0:0:0:0/42 — —
2606:4700:3035::6815:1d24 300s — AS13335 Cloudflare, Inc. 2606:4700:3000:0:0:0:0:0/42 — —

🔐 HTTPS Records#

1 records   148ms
PriorityTargetSvcParams
1 service . alpn="h3,h2" ipv4hint=104.21.29.36,172.67.171.76 ech=AEX+DQBBrgAgACA7l+AWlu0E3c3RWDov9dLBKmCOMgCEdtTqeIBIjFR+agAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3030::ac43:ab4c,2606:4700:3035::6815:1d24

📝 TXT Records#

1 records   541ms
TXT Record
v=spf1 a mx ip4:107.6.136.42 -all

✉️ SPF#

PolicyRecord (klausbaerentsen.dk)
-all (hard fail) v=spf1 a mx ip4:107.6.136.42 -all

📨 DMARC#

PolicyRecord (_dmarc.klausbaerentsen.dk)
p=quarantine v=DMARC1; p=quarantine;

📬 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 2026-10-24 12:21:57
www104.21.29.36 172.67.171.76 2606:4700:3030::ac43:ab4c 2606:4700:3035::6815:1d24 (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: 2/10 · policy: -all

No problems found

🔏 ACME Challenge#

TypeNameValue
TXT _acme-challenge.klausbaerentsen.dk eAtiXFZnHueoFyGRde80-g-bD7aWUc4yXoHUosAH290
TXT _acme-challenge.klausbaerentsen.dk YudXXOPEizQYX0_7FlLqUI41WJmChN0QbNGONwli7xA

🔗 TLSA / DANE#

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

🔐 DNSSEC#

262ms
CheckResult
Validation Status🔒 Secure
AD Flag (resolver validates)✓ Set
DS Record✓ Found
DNSKEY Record✓ Found
Flagsfully validated

🏷️ SOA#

0ms
FieldValue
Serial2409834209
Primary NS (MNAME)ray.ns.cloudflare.com
Responsible (RNAME)dns@cloudflare.com
Refresh10000s
Retry2400s
Expire604800s
Minimum (neg-cache TTL)1800s

📋 Registration#

WHOIS fetched 2026-10-14 15:33:29
FieldValue
RegistrarPunktum dk A/S (direct)
Registered2020-11-20
Expires2026-11-30 (35d)

🔗 Same registrant#

29 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
alfa-nova.dkPunktum dk A/S (direct)
alfanova.dkPunktum dk A/S (direct)
aroslejren.dkPunktum dk A/S (direct)
bygbaeredygtigt.dkPunktum dk A/S (direct)
christiandamsgaard.dkPunktum dk A/S (direct)
damsgaard-bruhn.dkPunktum dk A/S (direct)
detsidsteord.dkPunktum dk A/S (direct)
dinudstillerguide.dkPunktum dk A/S (direct)
gymdrama.dkPunktum dk A/S (direct)
johnnysjokes.dkPunktum dk A/S (direct)
kaloeviggruppe.dkPunktum dk A/S (direct)
kaløviggruppe.dkPunktum dk A/S (direct)
kirstenbank.dkPunktum dk A/S (direct)
leneabildgaardknudsen.dkPunktum dk A/S (direct)
mercy-scouts.dkPunktum dk A/S (direct)
pihlmark.dkPunktum dk A/S (direct)
plante-magi.dkPunktum dk A/S (direct)
plantemagi.dkPunktum dk A/S (direct)
poguemahone.dkPunktum dk A/S (direct)
retrospective.dkPunktum dk A/S (direct)
retrospectives.dkPunktum dk A/S (direct)
scrumstuff.dkPunktum dk A/S (direct)
tofthamming.dkPunktum dk A/S (direct)
udstilleradmin.dkPunktum dk A/S (direct)
udstillerdatabase.dkPunktum dk A/S (direct)
udstillerdemo.dkPunktum dk A/S (direct)
udstillerguide.dkPunktum dk A/S (direct)
udstillerguiden.dkPunktum dk A/S (direct)
virksomhedsteori.dkPunktum dk A/S (direct)
📋 WHOIS#

⏱️ Lookup Timing#

NS
161ms
A
151ms
MX
198ms
AAAA
190ms
TXT
541ms
CAA
177ms
HTTPS
148ms
TLSA
227ms
SOA
0ms
MTA-STS
205ms
DNSSEC
262ms
SRV
225ms
Total
2292ms

🕐 Scan History#

Scanned AtDurationRecordsDNSSEC
2026-10-24 12:21:57 1393ms 2 NS 2 A 1 MX 🔒 Secure
2026-10-14 15:17:19 2107ms 2 NS 2 A 1 MX 🔒 Secure
2026-10-03 20:58:20 1037ms 2 NS 2 A 1 MX 🔒 Secure
2026-09-26 19:53:52 995ms 2 NS 2 A 1 MX 🔒 Secure
2026-09-22 03:58:37 1354ms 2 NS 2 A 1 MX 🔒 Secure
2026-09-18 23:58:27 1282ms 2 NS 2 A 1 MX 🔒 Secure
2026-08-27 13:20:11 1131ms 2 NS 2 A 1 MX 🔒 Secure
2026-08-06 22:59:54 2333ms 2 NS 2 A 1 MX 🔒 Secure
2026-07-18 18:20:52 shown 2292ms 2 NS 2 A 1 MX 🔒 Secure
2026-07-12 11:48:43 16820ms 2 NS 2 A 1 MX 🔒 Secure
2026-06-28 05:55:48 1176ms 2 NS 2 A 1 MX 🔒 Secure
2026-06-26 18:13:03 1372ms 2 NS 2 A 1 MX 🔒 Secure
2026-06-20 18:39:35 1548ms 2 NS 2 A 1 MX 🔒 Secure
2026-06-18 04:23:08 3933ms 2 NS 2 A 1 MX 🔒 Secure
2026-06-18 04:12:42 9101ms 2 NS 2 A 1 MX 🔒 Secure
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