frederikbulow.dk

📜 Historical scan 2026-07-04 22:18:41  ·  ← Latest scan
⬇ 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 this scan: nameservers, A/AAAA, MX, TXT, SPF, DMARC, CAA, TLSA/DANE, MTA-STS, SRV and more.

🖥️ Nameservers#

4 records   66ms
NameserverIP addressesPTRASN / 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   68ms
IPTTLPTRASNISP / OrgCIDRCountryCity
213.184.84.10 3600s nlsh05.shared-infra.net AS59795 PerfGrid 213.184.84.0/23 🇳🇱 The Netherlands —

📧 MX Records#

1 records   60ms
PriorityTTLMail ServerIP addressesPTRASN
1 60s SMTP.GOOGLE.COM 142.250.147.26
142.250.147.27
142.251.9.26
142.251.9.27
2a00:1450:4025:c01::1a
2a00:1450:4025:c01::1b
2a00:1450:4025:c03::1a
2a00:1450:4025:c03::1b		 rd-in-f26.1e100.net
rd-in-f27.1e100.net
rc-in-f26.1e100.net
rc-in-f27.1e100.net
rd-in-f26.1e100.net
rd-in-f27.1e100.net
rc-in-f26.1e100.net
rc-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

📧 Autodiscover / Autoconfig#

ServiceCNAME / IP
🔷 Autodiscover213.184.84.10
🔶 Autoconfig213.184.84.10

🔷 AAAA Records (IPv6)#

1 records   66ms
IPv6 AddressTTLPTRASNISP / OrgCIDRCountryCity
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   565ms
TXT Record
google-site-verification=ZIZsOKw7DUsjbtlDic9IIPd_JQe3eeoGVF1Eaam7XZ0
v=spf1 +a +mx +include:spf-record.net + include:_spf.google.com ~all

✉️ SPF#

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

📨 DMARC#

PolicyRecord (_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#

latest probe, not this scan · checked 2026-10-08 03:29:00
www213.184.84.10 2a09:3a00:4010::1 (AS59795) (address records, no CNAME)
www vs bare domainSame network
WildcardYes: any name under the zone resolves

✍️ DKIM keys#

1 found
SelectorCNAMEKey
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#

TypeNameValue
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#

261ms
CheckResult
Validation Status🔓 Insecure
AD Flag (resolver validates)✗ Not set
DS Record✗ Not found
DNSKEY Record✗ Not found
Flagsunsigned answer

🏷️ SOA#

60ms
FieldValue
Serial2025031801
Primary NS (MNAME)ns1.dnscluster.dk
Responsible (RNAME)hostmaster@frederikbulow.dk
Refresh10800s
Retry3600s
Expire604800s
Minimum (neg-cache TTL)3600s

📋 Registration#

WHOIS fetched 2026-10-12 20:31:16
FieldValue
RegistrarPunktum dk A/S (direct)
Registered2007-02-08
Expires2027-02-28 (127d)

🔗 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
golfsimshop.dkONE.COM A/S
golfsimulatorer.dkONE.COM A/S
trofædesign.dkSimply.com A/S
📋 WHOIS#

⏱️ Lookup Timing#

NS
66ms
A
68ms
MX
60ms
AAAA
66ms
TXT
565ms
CAA
189ms
HTTPS
210ms
TLSA
378ms
SOA
60ms
MTA-STS
238ms
DNSSEC
261ms
SRV
286ms
Total
2560ms

🕐 Scan History#

Scanned AtDurationRecordsDNSSEC
2026-10-08 03:29:00 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 shown 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
dhd.dk [/] search Domains, Hosts & DNS — .dk zone