frederikbulow.dk

Records from scan: 2026-10-08 03:29:00 · 1245ms total · last checked 2026-10-17 13:27 (unchanged)

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

frederikbulow.dk is a .dk domain served by 4 nameservers (ns1.dnscluster.dk, ns2.dnscluster.dk, ns3.dnscluster.dk and 1 more). It was registered on 8 February 2007 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 213.184.84.10 is hosted by PerfGrid (AS59795) in The Netherlands. Mail is handled by SMTP.GOOGLE.COM. The zone is not DNSSEC-signed, publishes a DMARC policy and is reachable over IPv6. Below are all of its DNS records from our latest scan: nameservers, A/AAAA, MX, TXT, SPF, DMARC, CAA, TLSA/DANE, MTA-STS, SRV and more.

🖥️ Nameservers#

4 records 40ms

Nameserver	IP addresses	PTR	ASN / ISP
ns1.dnscluster.dk	2001:41d0:701:1100::7ec7 57.129.78.20	vps-1448e198.vps.ovh.net vps-1448e198.vps.ovh.net	AS16276 OVH SAS AS16276 OVH SAS
ns2.dnscluster.dk	212.95.58.14 2a00:c98:400f:104:1c00:a8ff:fe00:2ac	ns2.dnscluster.dk ns2.dnscluster.dk	AS28753 Leaseweb Deutschland GmbH AS28753 Leaseweb Deutschland GmbH
ns3.dnscluster.dk	213.184.84.70 2a09:3a00:4070::1	— —	AS59795 PerfGrid AS59795 PerfGrid
ns4.dnscluster.dk	2a06:a005:16d0:45::a 45.140.220.10	ns4.dnscluster.dk ns4.dnscluster.dk	AS142594 SpeedyPage Ltd AS142594 SpeedyPage Ltd

🌍 A Records#

1 records 40ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
213.184.84.10	3600s	nlsh05.shared-infra.net	AS59795	PerfGrid	213.184.84.0/23	🇳🇱 The Netherlands	—

📧 MX Records#

1 records 147ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
1	60s	SMTP.GOOGLE.COM	108.177.14.26 108.177.14.27 209.85.233.26 209.85.233.27 2a00:1450:4010:c03::1a 2a00:1450:4010:c03::1a 2a00:1450:4010:c03::1b 2a00:1450:4010:c03::1b 2a00:1450:4010:c0f::1a 2a00:1450:4010:c0f::1a 2a00:1450:4010:c0f::1b 2a00:1450:4010:c0f::1b 74.125.131.27	lt-in-f26.1e100.net lt-in-f27.1e100.net lr-in-f26.1e100.net lr-in-f27.1e100.net lr-in-x1a.1e100.net lr-in-f26.1e100.net lr-in-f27.1e100.net lr-in-x1b.1e100.net lt-in-x1a.1e100.net lt-in-f26.1e100.net lt-in-x1b.1e100.net lt-in-f27.1e100.net lu-in-f27.1e100.net	AS15169 Google LLC AS15169 Google LLC AS15169 Google LLC AS15169 Google LLC AS15169 Google LLC AS15169 Google LLC AS15169 Google LLC AS15169 Google LLC AS15169 Google LLC AS15169 Google LLC AS15169 Google LLC AS15169 Google LLC AS15169 Google LLC

📧 Autodiscover / Autoconfig#

Service	CNAME / IP
🔷 Autodiscover	213.184.84.10
🔶 Autoconfig	213.184.84.10

🔷 AAAA Records (IPv6)#

1 records 46ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2a09:3a00:4010::1	3600s	—	AS59795	PerfGrid	2a09:3a00:4000:0:0:0:0:0/40	🇳🇱 The Netherlands	—

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

2 records 724ms

TXT Record
google-site-verification=ZIZsOKw7DUsjbtlDic9IIPd_JQe3eeoGVF1Eaam7XZ0
v=spf1 +a +mx +include:spf-record.net + include:_spf.google.com ~all

✉️ SPF#

Policy	Record (frederikbulow.dk)
~all (soft fail)	v=spf1 +a +mx +include:spf-record.net + include:_spf.google.com ~all

📨 DMARC#

Policy	Record (_dmarc.frederikbulow.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#

checked 2026-10-08 03:29:00

www	213.184.84.10 2a09:3a00:4010::1 (AS59795) (address records, no CNAME)
www vs bare domain	Same network frederikbulow.dk: 213.184.84.10 2a09:3a00:4010::1 (AS59795) www.frederikbulow.dk: 213.184.84.10 2a09:3a00:4010::1 (AS59795)
Wildcard	Yes: any name under the zone resolves

✍️ DKIM keys#

1 found

Selector	CNAME	Key
default	—	RSA · ~1024 bit below 2048 bit

DKIM selectors can't be listed, so we check the common ones (Microsoft 365, Google, Mailchimp, SendGrid, generic). Keys under other selectors aren't shown.

🔎 SPF check#

zone-wide SPF report

DNS lookups: 5/10 · policy: ~all

error Unknown mechanism "+": receivers treat the record as a permanent error

🔏 ACME Challenge#

Type	Name	Value
CNAME	_acme-challenge.frederikbulow.dk	ac0ad343-11d6-4588-91ac-7dfb9b38743c.auth.acme-challenge.dk

🔗 TLSA / DANE#

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

🔐 DNSSEC#

156ms

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

🏷️ SOA#

51ms

Field	Value
Serial	2025031801
Primary NS (MNAME)	ns1.dnscluster.dk
Responsible (RNAME)	hostmaster@frederikbulow.dk
Refresh	10800s
Retry	3600s
Expire	604800s
Minimum (neg-cache TTL)	3600s

📋 Registration#

WHOIS fetched 2026-10-12 20:31:16

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2007-02-08
Expires	2027-02-28 (133d)

🔗 Same registrant#

2 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
golfsimulatorer.dk	ONE.COM A/S
trofædesign.dk	Simply.com A/S

📋 WHOIS#

⏱️ Lookup Timing#

40ms

147ms

AAAA

46ms

TXT

724ms

CAA

39ms

HTTPS

153ms

TLSA

289ms

SOA

51ms

MTA-STS

275ms

DNSSEC

156ms

SRV

395ms

Total

1245ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-08 03:29:00 shown	1245ms	4 NS 1 A 1 MX	🔓 Insecure
2026-09-23 22:26:09	2621ms	4 NS 1 A 1 MX	🔓 Insecure
2026-07-04 22:18:41	2560ms	4 NS 1 A 1 MX	🔓 Insecure
2026-06-21 11:42:55	822ms	4 NS 1 A 1 MX	⚠️ Bogus
2026-06-17 09:50:32	824ms	4 NS 1 A 1 MX	🔓 Insecure