ibfelt-siebert.dk

📜 Historical scan 2026-06-25 08:51:41 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

ibfelt-siebert.dk is a .dk domain served by 4 nameservers (ns1.simply.com, ns2.simply.com, ns3.simply.com and 1 more). It was registered on 14 October 2006 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 217.78.237.33 is hosted by Webdock.io ApS (AS44803) in Denmark. Mail is handled by dk.mx1.mailanyone.net, dk.mx2.mx25.net and 2 more. The zone is DNSSEC-signed and validates, has no 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 41ms

Nameserver	IP addresses	PTR	ASN / ISP
ns1.simply.com	2a02:2339:1:15c::4562:4562 91.197.248.78	ns1.simply.com ns1.simply.com	AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S
ns2.simply.com	185.25.141.15 2a02:2339:4006:101::4562:4562	ns2.simply.com ns2.simply.com	AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S
ns3.simply.com	91.197.248.79	ns3.simply.com	AS48854 team.blue Denmark A/S
ns4.simply.com	91.197.248.80	ns4.simply.com	AS48854 team.blue Denmark A/S

🌍 A Records#

1 records 33ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
217.78.237.33	3600s	cphlex.dk	AS44803	Webdock.io ApS	217.78.237.0/24	🇩🇰 Denmark	Asperup

📧 MX Records#

4 records 42ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	3600s	dk.mx1.mailanyone.net	192.162.219.155 2a01:77c0:1619:4100:6fa6:1315:2bd2:51cd	mx41.electric.net mx11.electric.net	AS16509 Amazon.com, Inc. AS16509 Amazon.com, Inc.
20	3600s	dk.mx2.mx25.net	192.162.219.49	mx41.electric.net	AS16509 Amazon.com, Inc.
30	3600s	dk.mx3.mailanyone.net	192.162.219.255 2a01:77c0:1619:4101:d99:c22:fb4d:290e	mx41.electric.net mx10.electric.net	AS16509 Amazon.com, Inc. AS16509 Amazon.com, Inc.
40	3600s	dk.mx4.mx25.net	192.162.219.255	mx41.electric.net	AS16509 Amazon.com, Inc.

📧 Autodiscover / Autoconfig#

Service	CNAME / IP
🔷 Autodiscover	autodiscover.outlook.com → 40.104.116.40
🔶 Autoconfig	94.231.101.73

🔷 AAAA Records (IPv6)#

1 records 42ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2a06:1301:4050:200:0:237:33:0	3600s	cphlex.dk	AS44803	Webdock.io ApS	2a06:1301:4050:0:0:0:0:0/48	🇩🇰 Denmark	Nørre Åby

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

2 records 167ms

TXT Record
MS=ms43717117
v=spf1 include:spf.protection.outlook.com include:spf.mailanyone.net -all

✉️ SPF#

Policy	Record (ibfelt-siebert.dk)
-all (hard fail)	v=spf1 include:spf.protection.outlook.com include:spf.mailanyone.net -all

📨 DMARC#

✗ No DMARC record — mail spoofing not restricted

📬 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 14:13:18

www	217.78.237.33 2a06:1301:4050:200:0:237:33:0 (AS44803) (address records, no CNAME)
www vs bare domain	Same network ibfelt-siebert.dk: 217.78.237.33 2a06:1301:4050:200:0:237:33:0 (AS44803) www.ibfelt-siebert.dk: 217.78.237.33 2a06:1301:4050:200:0:237:33:0 (AS44803)
Wildcard	Yes: any name under the zone resolves
Denial of existence	NSEC zone can be walked (all names enumerable)
CDS / CDNSKEY	Published: 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

🔗 TLSA / DANE#

8 records 206ms

Service / Owner	Type	Cert association
SMTP _25._tcp.dk.mx1.mailanyone.net	DANE-EE · Full cert · SHA-256	443DFE296DAC92DD311766BAD0B04CC7…
SMTP _25._tcp.dk.mx1.mailanyone.net	DANE-EE · Full cert · SHA-256	1AAAC405385DEB66C25E43D629569F6C…
SMTP _25._tcp.dk.mx2.mx25.net	DANE-EE · Full cert · SHA-256	1AAAC405385DEB66C25E43D629569F6C…
SMTP _25._tcp.dk.mx2.mx25.net	DANE-EE · Full cert · SHA-256	443DFE296DAC92DD311766BAD0B04CC7…
SMTP _25._tcp.dk.mx3.mailanyone.net	DANE-EE · Full cert · SHA-256	443DFE296DAC92DD311766BAD0B04CC7…
SMTP _25._tcp.dk.mx3.mailanyone.net	DANE-EE · Full cert · SHA-256	1AAAC405385DEB66C25E43D629569F6C…
SMTP _25._tcp.dk.mx4.mx25.net	DANE-EE · Full cert · SHA-256	1AAAC405385DEB66C25E43D629569F6C…
SMTP _25._tcp.dk.mx4.mx25.net	DANE-EE · Full cert · SHA-256	443DFE296DAC92DD311766BAD0B04CC7…

🔐 DNSSEC#

64ms

Check	Result
Validation Status	🔒 Secure
AD Flag (resolver validates)	✓ Set
DS Record	✓ Found
DNSKEY Record	✓ Found
Flags	fully validated

🏷️ SOA#

41ms

Field	Value
Serial	2025042300
Primary NS (MNAME)	ns1.simply.com
Responsible (RNAME)	hostmaster@simply.com
Refresh	14400s
Retry	3600s
Expire	1209600s
Minimum (neg-cache TTL)	3600s

📋 Registration#

WHOIS fetched 2026-10-16 15:52:44

Field	Value
Registrar	Simply.com A/S
Registered	2006-10-14
Expires	2026-10-31 (10d)

🔗 Same registrant#

0 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).

No other domain with this registrant in our WHOIS data yet

📋 WHOIS#

⏱️ Lookup Timing#

41ms

33ms

42ms

AAAA

42ms

TXT

167ms

CAA

31ms

HTTPS

29ms

TLSA

206ms

SOA

41ms

MTA-STS

69ms

DNSSEC

64ms

SRV

77ms

Total

966ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-01 12:37:39	2103ms	4 NS 1 A 4 MX	🔒 Secure
2026-09-27 12:11:54	1190ms	4 NS 1 A 4 MX	🔒 Secure
2026-08-26 23:06:08	1646ms	4 NS 1 A 4 MX	🔒 Secure
2026-06-25 08:51:41 shown	966ms	4 NS 1 A 4 MX	🔒 Secure
2026-06-24 23:38:12	7508ms	4 NS 1 A 4 MX	🔒 Secure
2026-06-22 08:04:15	1195ms	0 NS 0 A 0 MX	❓ Unknown
2026-06-17 14:16:34	2853ms	4 NS 1 A 4 MX	🔒 Secure