omu.dk

📜 Historical scan 2026-08-30 11:43:43 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

omu.dk is a .dk domain served by 2 nameservers (brynne.ns.cloudflare.com, julian.ns.cloudflare.com). It was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.10.66 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by mail.omu.dk. The zone is not DNSSEC-signed, 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#

2 records 32ms

Nameserver	IP addresses	PTR	ASN / ISP
brynne.ns.cloudflare.com	108.162.194.65 162.159.38.65 172.64.34.65 2606:4700:50::a29f:2641 2803:f800:50::6ca2:c241 2a06:98c1:50::ac40:2241	brynne.ns.cloudflare.com brynne.ns.cloudflare.com brynne.ns.cloudflare.com brynne.ns.cloudflare.com brynne.ns.cloudflare.com brynne.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
julian.ns.cloudflare.com	108.162.195.94 162.159.44.94 172.64.35.94 2606:4700:58::a29f:2c5e 2803:f800:50::6ca2:c35e 2a06:98c1:50::ac40:235e	julian.ns.cloudflare.com julian.ns.cloudflare.com julian.ns.cloudflare.com julian.ns.cloudflare.com julian.ns.cloudflare.com julian.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.

🌍 A Records#

2 records 30ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.21.10.66	300s	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.131.65	300s	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records#

1 records 37ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
1	300s	mail.omu.dk	192.250.229.80	s3145.fra1.stableserver.net	AS209341 WHG Hosting Services Ltd

📧 Autodiscover / Autoconfig#

Service	CNAME / IP
🔷 Autodiscover	mail.omu.dk → 192.250.229.80
🔶 Autoconfig	104.21.10.66

🔷 AAAA Records (IPv6)#

2 records 23ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3033::6815:a42	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3035::ac43:8341	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records#

1 records 23ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.10.66,172.67.131.65 ech=AEX+DQBBkQAgACBN60Dn0G1V/kSfekq3+A6F0ajLKKPW0zZkelZB0zV2GAAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3033::6815:a42,2606:4700:3035::ac43:8341

📝 TXT Records#

2 records 173ms

TXT Record
v=DMARC1; p=quarantine; pct=100; rua=mailto:dmarc@omu.dk; fo=1; adkim=s; aspf=s;
v=spf1 +mx +a +ip4:192.250.229.80 +include:spf.mysecurecloudhost.com ~all

✉️ SPF#

Policy	Record (omu.dk)
~all (soft fail)	v=spf1 +mx +a +ip4:192.250.229.80 +include:spf.mysecurecloudhost.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 2026-10-11 04:22:15

www	104.21.10.66 172.67.131.65 2606:4700:3033::6815:a42 2606:4700:3035::ac43:8341 (AS13335) (address records, no CNAME)
www vs bare domain	Same network omu.dk: 104.21.10.66 172.67.131.65 2606:4700:3033::6815:a42 2606:4700:3035::ac43:8341 (AS13335) www.omu.dk: 104.21.10.66 172.67.131.65 2606:4700:3033::6815:a42 2606:4700:3035::ac43:8341 (AS13335)
Wildcard	Yes: any name under the zone resolves

✍️ DKIM keys#

1 found

Selector	CNAME	Key
default	—	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

🔗 TLSA / DANE#

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

🔐 DNSSEC#

102ms

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	2413367551
Primary NS (MNAME)	brynne.ns.cloudflare.com
Responsible (RNAME)	dns@cloudflare.com
Refresh	10000s
Retry	2400s
Expire	604800s
Minimum (neg-cache TTL)	1800s

📋 Registration#

✗ No registration data yet — queued for a WHOIS lookup

📋 WHOIS#

⏱️ Lookup Timing#

32ms

30ms

37ms

AAAA

23ms

TXT

173ms

CAA

25ms

HTTPS

23ms

TLSA

52ms

SOA

0ms

MTA-STS

60ms

DNSSEC

102ms

SRV

60ms

Total

1122ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-11 04:22:15	554ms	2 NS 2 A 1 MX	🔓 Insecure
2026-09-30 23:08:06	677ms	2 NS 2 A 1 MX	🔓 Insecure
2026-08-30 11:43:43 shown	1122ms	2 NS 2 A 1 MX	🔓 Insecure
2026-08-14 09:24:16	979ms	2 NS 2 A 1 MX	🔓 Insecure
2026-06-30 23:18:06	802ms	2 NS 2 A 1 MX	🔓 Insecure
2026-06-28 07:06:48	904ms	2 NS 2 A 1 MX	🔓 Insecure
2026-06-17 14:05:09	4848ms	2 NS 2 A 1 MX	🔓 Insecure