vtk.dk

📜 Historical scan 2026-09-14 19:57:17 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

vtk.dk is a .dk domain served by 2 nameservers (blair.ns.cloudflare.com, frank.ns.cloudflare.com). It was registered on 31 January 1997 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 152.115.36.112 is hosted by GlobalConnect A/S (AS31027) in Denmark. Mail is handled by vtk-dk.mail.protection.outlook.com. The zone is not DNSSEC-signed, publishes a 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#

2 records 100ms

Nameserver	IP addresses	PTR	ASN / ISP
blair.ns.cloudflare.com	108.162.194.121 162.159.38.121 172.64.34.121 2606:4700:50::a29f:2679 2803:f800:50::6ca2:c279 2a06:98c1:50::ac40:2279	blair.ns.cloudflare.com blair.ns.cloudflare.com blair.ns.cloudflare.com blair.ns.cloudflare.com blair.ns.cloudflare.com blair.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
frank.ns.cloudflare.com	108.162.193.166 172.64.33.166 173.245.59.166 2606:4700:58::adf5:3ba6 2803:f800:50::6ca2:c1a6 2a06:98c1:50::ac40:21a6	frank.ns.cloudflare.com frank.ns.cloudflare.com frank.ns.cloudflare.com frank.ns.cloudflare.com frank.ns.cloudflare.com frank.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.

🌍 A Records#

1 records 119ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
152.115.36.112	300s	s10.stom.dk	AS31027	GlobalConnect A/S	152.115.0.0/16	🇩🇰 Denmark	—

📧 MX Records#

1 records 95ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	300s	vtk-dk.mail.protection.outlook.com	2a01:111:f403:ca04::10 2a01:111:f403:ca04::9 2a01:111:f403:ca21::c 2a01:111:f403:ca48::a 52.101.103.36 52.101.68.12 52.101.68.25 52.101.91.162	mail-dbapr03cu00100.inbound.protection.outlook.com mail-db7pr03cu00601.inbound.protection.outlook.com mail-matpr04cu00204.inbound.protection.outlook.com mail-miypr02cu00202.inbound.protection.outlook.com mail-miypr05cu00104.inbound.protection.outlook.com mail-db9pr02cu00204.inbound.protection.outlook.com mail-db8pr02cu00101.inbound.protection.outlook.com mail-matpr04cu00302.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 → 52.98.206.168

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

🔌 SRV Records#

1 records 607ms

Service	Priority	Weight	Port	Target
_sipfederationtls._tcp	10	1	5061	sipfed.online.lync.com

📝 TXT Records#

3 records 530ms

TXT Record
MS=ms98849083
v=spf1 a:mail.blite.dk ip4:152.115.36.112 ip4:87.104.221.82 ip4:87.104.221.83 ip4:87.104.221.86 ip4:192.162.219.206 ip4:217.116.213.122 include:spf.stom.dk include:spf.protection.outlook.com include:spf.mailanyone.net include:_spf.consignor.com -all
vpe=267cbf77

✉️ SPF#

Policy	Record (vtk.dk)
-all (hard fail)	v=spf1 a:mail.blite.dk ip4:152.115.36.112 ip4:87.104.221.82 ip4:87.104.221.83 ip4:87.104.221.86 ip4:192.162.219.206 ip4:217.116.213.122 include:spf.stom.dk include:spf.protection.outlook.com include:spf.mailanyone.net include:_spf.consignor.com -all

📨 DMARC#

Policy	Record (_dmarc.vtk.dk)
p=none (monitor only)	v=DMARC1; p=none; pct=100; rua=mailto:re+qouj0kceguu@dmarc.postmarkapp.com; sp=none; aspf=r;

📬 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 2026-10-23 02:24:00

www	152.115.36.112 (AS31027) (address records, no CNAME)
www vs bare domain	Same network vtk.dk: 152.115.36.112 (AS31027) www.vtk.dk: 152.115.36.112 (AS31027)
Wildcard	No

✍️ DKIM keys#

4 found

Selector	CNAME	Key
s1	s1.domainkey.u26927624.wl125.sendgrid.net	RSA · ~2048 bit
s2	s2.domainkey.u26927624.wl125.sendgrid.net	RSA · ~2048 bit
selector1	selector1-vtk-dk._domainkey.vtkdk.onmicrosoft.com	RSA · ~1024 bit below 2048 bit
selector2	selector2-vtk-dk._domainkey.vtkdk.onmicrosoft.com	RSA · ~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

No problems found

🔏 ACME Challenge#

Type	Name	Value
TXT	_acme-challenge.vtk.dk	PzWpN_juqViC8i9su5QmevM5T35eT44QRUdRPScbiDo
TXT	_acme-challenge.vtk.dk	hRnP1yb6BAg2KmezomiJlg1omzuEVmHgHGXMxhLZyq4

🔗 TLSA / DANE#

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

🔐 DNSSEC#

204ms

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

🏷️ SOA#

0ms

Field	Value
Serial	2414753577
Primary NS (MNAME)	blair.ns.cloudflare.com
Responsible (RNAME)	dns@cloudflare.com
Refresh	10000s
Retry	2400s
Expire	604800s
Minimum (neg-cache TTL)	1800s

📋 Registration#

WHOIS fetched 2026-10-05 06:59:40

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	1997-01-31
Expires	2027-03-31 (156d)

📋 WHOIS#

⏱️ Lookup Timing#

100ms

119ms

95ms

AAAA

356ms

TXT

530ms

CAA

118ms

HTTPS

97ms

TLSA

225ms

SOA

0ms

MTA-STS

147ms

DNSSEC

204ms

SRV

607ms

Total

2038ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-23 02:24:00	1136ms	2 NS 1 A 1 MX	🔓 Insecure
2026-10-09 12:01:00	1497ms	2 NS 1 A 1 MX	🔓 Insecure
2026-10-05 06:26:38	1725ms	2 NS 1 A 1 MX	🔓 Insecure
2026-09-24 03:14:40	2527ms	2 NS 1 A 1 MX	🔓 Insecure
2026-09-14 19:57:17 shown	2038ms	2 NS 1 A 1 MX	🔓 Insecure
2026-09-07 17:52:00	3755ms	2 NS 1 A 1 MX	🔓 Insecure
2026-09-04 11:21:00	9926ms	2 NS 1 A 1 MX	🔓 Insecure
2026-09-03 19:18:53	2824ms	2 NS 1 A 1 MX	🔓 Insecure
2026-08-27 05:48:03	1368ms	2 NS 1 A 1 MX	🔓 Insecure
2026-08-26 19:29:36	1818ms	2 NS 1 A 1 MX	🔓 Insecure
2026-08-08 03:49:19	1855ms	2 NS 1 A 1 MX	🔓 Insecure
2026-07-16 10:56:44	1254ms	2 NS 1 A 1 MX	🔓 Insecure
2026-06-24 08:51:27	1290ms	2 NS 1 A 1 MX	❓ Unknown
2026-06-17 12:54:00	3467ms	2 NS 1 A 1 MX	🔓 Insecure