ao.dk

📜 Historical scan 2026-10-12 14:31:50 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

ao.dk is a .dk domain served by 2 nameservers (kiki.ns.cloudflare.com, mitch.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 5.44.137.42 is hosted by TDC Holding A/S (AS3292) in Denmark. Mail is handled by ao-dk.mail.protection.outlook.com. The zone is DNSSEC-signed and validates, 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 35ms

Nameserver	IP addresses	PTR	ASN / ISP
kiki.ns.cloudflare.com	108.162.192.180 172.64.32.180 173.245.58.180 2606:4700:50::adf5:3ab4 2803:f800:50::6ca2:c0b4 2a06:98c1:50::ac40:20b4	kiki.ns.cloudflare.com kiki.ns.cloudflare.com kiki.ns.cloudflare.com kiki.ns.cloudflare.com kiki.ns.cloudflare.com kiki.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
mitch.ns.cloudflare.com	108.162.193.208 172.64.33.208 173.245.59.208 2606:4700:58::adf5:3bd0 2803:f800:50::6ca2:c1d0 2a06:98c1:50::ac40:21d0	mitch.ns.cloudflare.com mitch.ns.cloudflare.com mitch.ns.cloudflare.com mitch.ns.cloudflare.com mitch.ns.cloudflare.com mitch.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 36ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
5.44.137.42	300s	netcompany.com	AS3292	TDC Holding A/S	5.44.136.0/21	🇩🇰 Denmark	—

📧 MX Records#

1 records 30ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	60s	ao-dk.mail.protection.outlook.com	2a01:111:f403:ca09::24 2a01:111:f403:ca21::10 2a01:111:f403:ca21::c 2a01:111:f403:ca21::e 52.101.68.10 52.101.68.21 52.101.68.27 52.101.91.159	mail-am6pr02cu00204.inbound.protection.outlook.com mail-matpr05cu00100.inbound.protection.outlook.com mail-matpr04cu00204.inbound.protection.outlook.com mail-matpr04cu00306.inbound.protection.outlook.com mail-dbbpr03cu00102.inbound.protection.outlook.com mail-db4pr02cu00205.inbound.protection.outlook.com mail-db7pr03cu00503.inbound.protection.outlook.com mail-matpr04cu00207.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 → 52.98.154.136

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

🔌 SRV Records#

1 records 63ms

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

📝 TXT Records#

17 records 553ms

TXT Record
_qaesvu337vdaln77aiegak0wachbjny
00D4L000000GZl1=1TBTl00000002xt
apple-domain-verification=JXtkxS_GQXqS6M7CHHND8cFXxHvwvLsbH9wDI5yyCiA
apple-domain-verification=qInTGBakzLED6Yd8
atlassian-domain-verification=nf5a3RajeuvrQGwKWzgZUBxvnnO5E2wIgIYLgt0JoHgmFJYcIsx22IPpWBVi44sd
barco-verification=7febdd83-9e45-55d4-b232-bf06bcbf809f
bw=Ndtdl6eKKGzIuqGm2REy0kEc//rCZ9w45otItcUoJXZb
exRyI+OWH/Qd9oJmXci29HVMVf+PLzf1IA7JHSwOJl4=
globalsign-domain-verification=KnscwkaYTkRHf8PLiITbpTA9hgu-f9MvIHmCEbk7rG
have-i-been-pwned-verification=4dabddcc4b547630b2f17395e3d0c2c2
infor-cloudsuite-domain-verification=G2ZMEURQWY2LEXFX8VMJ75ARHBVUVKNJSA7S8V978SKHQGDWPZK4FVVCNH2HCNS9
make-domain-verification=fd984a45-38d6-44c5-b66d-10fbc669a0bc
MS=ms95910679
openai-domain-verification=dv-5QMGQyMiUnE5HflqWit7NWa2
pIHsfjExHxnBke0qI7JrqZXFjA983nfNbAvEmC4ulf/IG0f57zUXCGyTRe6PaqMtE1MCc8eIlIvOIpUXq26f4g==
teamviewer-sso-verification=d7cf5880ac99457691e1931c64ccb13c
v=spf1 include:_u.ao.dk._spf.smart.ondmarc.com include:spf.protection.outlook.com ~all

✉️ SPF#

Policy	Record (ao.dk)
~all (soft fail)	v=spf1 include:_u.ao.dk._spf.smart.ondmarc.com include:spf.protection.outlook.com ~all

📨 DMARC#

Policy	Record (_dmarc.ao.dk)
p=reject	v=DMARC1; p=reject; pct=100; sp=reject; rua=mailto:998a73ca@inbox.ondmarc.com; ruf=mailto:998a73ca@inbox.ondmarc.com; adkim=r; aspf=r; fo=0; rf=afrf; ri=3600

📬 MTA-STS#

350ms

Check	Result
Status	🔒 Enforce
TXT record (_mta-sts)	✓ Found
HTTPS policy	✓ Valid
Mode	enforce
Policy ID	1678449302257
max_age	1209600s
Policy MX	ao-dk.mail.protection.outlook.com

📈 TLSRPT#

Status	Report address (rua)
✓ Enabled	mailto:998a73ca@inbox.ondmarc.com

📜 CAA Records#

✗ No CAA records — any CA may issue certificates

🧩 Web & zone#

latest probe, not this scan · checked 2026-10-17 21:28:46

www CNAME	ao.dk (all on ao.dk) → 5.44.137.42 (AS3292)
www vs bare domain	Same network ao.dk: 5.44.137.42 (AS3292) www.ao.dk: 5.44.137.42 (AS3292)
Wildcard	No
Denial of existence	Compact NSEC (RFC 9824, "black lies") not walkable
CDS / CDNSKEY	Published: key rollovers can be automated with the registry (RFC 7344/8078) 1 CDS, 1 CDNSKEY

✍️ DKIM keys#

2 found

Selector	CNAME	Key
selector1	selector1-ao-dk._domainkey.aojohansen.onmicrosoft.com	RSA · ~2048 bit
selector2	selector2-ao-dk._domainkey.aojohansen.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: 13/10 · policy: ~all

error include:_u.ao.dk._spf.smart.ondmarc.com includes itself (directly or via another include): receivers return permerror
error 13 DNS lookups: the limit is 10, so a receiver whose evaluation gets past the 10th returns permerror (SPF fails)

🔏 ACME Challenge#

Type	Name	Value
TXT	_acme-challenge.ao.dk	4OdblsyMTmLUjX3yc92YQ8cFfSZaxVFieXF_94NWTrY
TXT	_acme-challenge.ao.dk	mbbCUBEZWa4MARu_5SzuOVGrI_8qjL5HV1utXo

🔗 TLSA / DANE#

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

🔐 DNSSEC#

51ms

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

🏷️ SOA#

25ms

Field	Value
Serial	2417279827
Primary NS (MNAME)	kiki.ns.cloudflare.com
Responsible (RNAME)	dns@cloudflare.com
Refresh	10000s
Retry	2400s
Expire	604800s
Minimum (neg-cache TTL)	1800s

📋 Registration#

WHOIS fetched 2026-10-06 20:07:09

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	1997-01-31
Expires	2027-03-31 (161d)

📋 WHOIS#

⏱️ Lookup Timing#

35ms

36ms

30ms

AAAA

37ms

TXT

553ms

CAA

45ms

HTTPS

44ms

TLSA

2038ms

SOA

25ms

MTA-STS

350ms

DNSSEC

51ms

SRV

63ms

Total

2788ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-17 21:28:46	2494ms	2 NS 1 A 1 MX	🔒 Secure
2026-10-15 18:56:17	4920ms	2 NS 1 A 1 MX	🔒 Secure
2026-10-12 14:31:50 shown	2788ms	2 NS 1 A 1 MX	🔒 Secure
2026-10-10 10:22:51	2285ms	2 NS 1 A 1 MX	🔒 Secure
2026-10-09 02:53:40	4840ms	2 NS 1 A 1 MX	🔒 Secure
2026-10-06 19:35:35	4856ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-29 18:40:03	4959ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-26 01:53:44	1165ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-25 16:57:04	2370ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-24 16:35:45	2690ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-23 15:40:12	1486ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-21 03:20:02	3482ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-15 07:33:15	8132ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-08 06:00:22	2069ms	2 NS 1 A 1 MX	🔒 Secure
2026-08-31 04:02:39	2577ms	2 NS 1 A 1 MX	🔒 Secure
2026-08-11 14:09:00	8495ms	2 NS 1 A 1 MX	🔒 Secure
2026-08-09 07:06:09	5414ms	2 NS 1 A 1 MX	🔒 Secure
2026-07-18 04:42:24	5359ms	2 NS 1 A 1 MX	🔒 Secure
2026-07-16 14:21:36	9116ms	2 NS 1 A 1 MX	🔒 Secure
2026-07-13 21:43:58	1543ms	2 NS 1 A 1 MX	🔒 Secure
2026-07-10 16:34:12	4685ms	2 NS 1 A 1 MX	🔒 Secure
2026-07-08 22:57:44	2685ms	2 NS 1 A 1 MX	🔒 Secure
2026-07-07 16:22:19	3750ms	2 NS 1 A 1 MX	🔒 Secure
2026-07-03 14:03:52	9208ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-26 22:25:13	3332ms	2 NS 1 A 1 MX	🔒 Secure