tetzlaff.dk

📜 Historical scan 2026-09-30 06:06:07 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

tetzlaff.dk is a .dk domain served by 4 nameservers (ns1.bdm.microsoftonline.com, ns2.bdm.microsoftonline.com, ns3.bdm.microsoftonline.com and 1 more). It was registered on 20 March 1998 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Mail is handled by tetzlaff-dk.mail.protection.outlook.com. The zone is not DNSSEC-signed, has no DMARC policy and has no IPv6 address. 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 43ms

Nameserver	IP addresses	PTR	ASN / ISP
ns1.bdm.microsoftonline.com	13.107.236.208 2603:1061:0:700::d0	ns1-208.azure-dns.com ns1-208.azure-dns.com	AS8075 Microsoft Corporation AS8075 Microsoft Corporation
ns2.bdm.microsoftonline.com	150.171.21.208 2620:1ec:8ec:700::d0	ns2-208.azure-dns.net ns2-208.azure-dns.net	AS8075 Microsoft Corporation AS8075 Microsoft Corporation
ns3.bdm.microsoftonline.com	204.14.183.208 2a01:111:4000:700::d0	ns3-208.azure-dns.org ns3-208.azure-dns.org	AS8075 Microsoft Corporation AS8075 Microsoft Corporation
ns4.bdm.microsoftonline.com	208.84.5.208 2620:1ec:bda:700::d0	ns4-208.azure-dns.info ns4-208.azure-dns.info	AS8075 Microsoft Corporation AS8075 Microsoft Corporation

🌍 A Records#

🌍

No A records found

📧 MX Records#

1 records 39ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	3600s	tetzlaff-dk.mail.protection.outlook.com	2a01:111:f403:ca04::4 2a01:111:f403:ca21::c 2a01:111:f403:ca3c::6 2a01:111:f403:ca48::a 52.101.103.36 52.101.103.39 52.101.209.31 52.101.91.156	mail-db4pr02cu00204.inbound.protection.outlook.com mail-matpr04cu00204.inbound.protection.outlook.com mail-zrxpr04cu00106.inbound.protection.outlook.com mail-miypr02cu00202.inbound.protection.outlook.com mail-miypr05cu00104.inbound.protection.outlook.com mail-miypr05cu00207.inbound.protection.outlook.com mail-cpjpr05cu00207.inbound.protection.outlook.com mail-maspr04cu00104.inbound.protection.outlook.com	AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation

📧 Autodiscover / Autoconfig#

Service	CNAME / IP
🔷 Autodiscover	autodiscover.outlook.com → 52.98.149.136

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

🔌 SRV Records#

1 records 62ms

Service	Priority	Weight	Port	Target
_sipfederationtls._tcp	100	1	5061	sipfed.online.lync.com

📝 TXT Records#

2 records 182ms

TXT Record
mscid=n9mzyI2MqS5iZ94jYfrzowh05ff0mBelyryhsEO4CmLVNUi4RQ+nsoduN9pQ+/u/TrepDSgLl5rot9sc5q/K1A==
v=spf1 include:spf.protection.outlook.com -all

✉️ SPF#

Policy	Record (tetzlaff.dk)
-all (hard fail)	v=spf1 include:spf.protection.outlook.com -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 2026-10-09 09:40:55

www	NXDOMAIN
www vs bare domain	Neither resolves tetzlaff.dk: no address www.tetzlaff.dk: no address
Wildcard	No

🔎 SPF check#

zone-wide SPF report

DNS lookups: 1/10 · policy: -all

No problems found

🔗 TLSA / DANE#

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

🔐 DNSSEC#

75ms

Check	Result
Validation Status	🔓 Insecure
AD Flag (resolver validates)	✗ Not set
DS Record	✗ Not found
DNSKEY Record	✗ Not found
Flags	resolution failed: ncache nxrrset

🏷️ SOA#

0ms

Field	Value
Serial	1
Primary NS (MNAME)	ns1.bdm.microsoftonline.com
Responsible (RNAME)	azuredns-hostmaster@microsoft.com
Refresh	3600s
Retry	300s
Expire	2419200s
Minimum (neg-cache TTL)	300s

📋 Registration#

WHOIS fetched 2026-10-11 11:51:42

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	1998-03-20
Expires	2031-03-31 (1621d)

🔗 Same registrant#

17 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
38104040.dk	WEBHOSTING A/S
48268020.dk	WEBHOSTING A/S
centrumdocs.dk	WEBHOSTING A/S
frederiksberggade.dk	Punktum dk A/S (direct)
klinikjordemoder.dk	WEBHOSTING A/S
lægernepåstrøget.dk	WEBHOSTING A/S
lægernevedsøerne.dk	WEBHOSTING A/S
mitdna.dk	WEBHOSTING A/S
praksisitrivsel.dk	WEBHOSTING A/S
scanningsjordemoder.dk	WEBHOSTING A/S
skin-tag.dk	WEBHOSTING A/S
skin-tags.dk	WEBHOSTING A/S
skintag.dk	WEBHOSTING A/S
skintags.dk	WEBHOSTING A/S
spiralen.dk	WEBHOSTING A/S
vaccinationipraksis.dk	WEBHOSTING A/S
yourgp.dk	WEBHOSTING A/S

📋 WHOIS#

⏱️ Lookup Timing#

43ms

40ms

39ms

AAAA

41ms

TXT

182ms

CAA

34ms

HTTPS

37ms

TLSA

603ms

SOA

0ms

MTA-STS

52ms

DNSSEC

75ms

SRV

62ms

Total

1109ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-09 09:40:54	1339ms	4 NS 0 A 1 MX	🔓 Insecure
2026-09-30 06:06:07 shown	1109ms	4 NS 0 A 1 MX	🔓 Insecure
2026-09-29 15:44:48	1678ms	4 NS 0 A 1 MX	🔓 Insecure
2026-08-26 19:51:08	988ms	4 NS 0 A 1 MX	🔓 Insecure
2026-07-03 01:55:26	1082ms	4 NS 0 A 1 MX	🔓 Insecure
2026-06-18 01:02:21	966ms	4 NS 0 A 1 MX	🔓 Insecure