optimus.dk

Records from scan: 2026-10-07 07:42:00 · 988ms total · last checked 2026-10-17 21:52 (unchanged)

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

optimus.dk is a .dk domain served by 2 nameservers (elma.ns.cloudflare.com, henry.ns.cloudflare.com). It was registered on 25 January 2016 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.77.197 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by optimus-dk.mail.protection.outlook.com. The zone is not DNSSEC-signed, publishes a DMARC policy and is reachable over IPv6. Below are all of its DNS records from our latest scan: nameservers, A/AAAA, MX, TXT, SPF, DMARC, CAA, TLSA/DANE, MTA-STS, SRV and more.

🖥️ Nameservers#

2 records 36ms

Nameserver	IP addresses	PTR	ASN / ISP
elma.ns.cloudflare.com	108.162.192.154 172.64.32.154 173.245.58.154 2606:4700:50::adf5:3a9a 2803:f800:50::6ca2:c09a 2a06:98c1:50::ac40:209a	elma.ns.cloudflare.com elma.ns.cloudflare.com elma.ns.cloudflare.com elma.ns.cloudflare.com elma.ns.cloudflare.com elma.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
henry.ns.cloudflare.com	108.162.193.176 172.64.33.176 173.245.59.176 2606:4700:58::adf5:3bb0 2803:f800:50::6ca2:c1b0 2a06:98c1:50::ac40:21b0	henry.ns.cloudflare.com henry.ns.cloudflare.com henry.ns.cloudflare.com henry.ns.cloudflare.com henry.ns.cloudflare.com henry.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 23ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.21.77.197	300s	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.211.110	300s	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records#

1 records 40ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	300s	optimus-dk.mail.protection.outlook.com	2a01:111:f403:c967::a 2a01:111:f403:ca04::4 2a01:111:f403:ca04::b 2a01:111:f403:ca48::8 52.101.103.162 52.101.209.28 52.101.68.29 52.101.73.145	mail-cpjpr05cu00102.inbound.protection.outlook.com mail-db4pr02cu00204.inbound.protection.outlook.com mail-dbbpr03cu00103.inbound.protection.outlook.com mail-miypr02cu00100.inbound.protection.outlook.com mail-miypr03cu00202.inbound.protection.outlook.com mail-cpjpr05cu00104.inbound.protection.outlook.com mail-dbapr03cu00105.inbound.protection.outlook.com mail-am6pr02cu00301.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	104.21.77.197

🔷 AAAA Records (IPv6)#

2 records 34ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3032::6815:4dc5	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3037::ac43:d36e	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records#

1 records 34ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.77.197,172.67.211.110 ech=AEX+DQBBYAAgACBILetPK9QrZ/VzX/ENbUdmxXL01gQYlU9KA2XkyHc4VQAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3032::6815:4dc5,2606:4700:3037::ac43:d36e

🔌 SRV Records#

1 records 56ms

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

📝 TXT Records#

6 records 177ms

TXT Record
2mckichjvl0gbjmv21mldueuha
8994ig616lmvp8nvftvsf0rtn6
ca3-323a4078ce79495fa5d51518616945bf
ca3-d12a24d2593e4534a2ef289531f5b8fb
MS=ms29849689
v=spf1 include:spf.protection.outlook.com ip4:80.208.35.5 include:spf.eu.exclaimer.net -all

✉️ SPF#

Policy	Record (optimus.dk)
-all (hard fail)	v=spf1 include:spf.protection.outlook.com ip4:80.208.35.5 include:spf.eu.exclaimer.net -all

📨 DMARC#

Policy	Record (_dmarc.optimus.dk)
p=reject	v=DMARC1; p=reject; pct=100; rua=mailto:IT-Admin@optimus.dk

📬 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#

checked 2026-10-08 07:52:23

www CNAME	web.jimdosite.com (all on jimdosite.com) → 162.159.128.70 162.159.129.70 2606:4700:7::a29f:8046 2606:4700:7::a29f:8146 (AS13335)
www vs bare domain	Same network optimus.dk: 104.21.77.197 172.67.211.110 2606:4700:3032::6815:4dc5 2606:4700:3037::ac43:d36e (AS13335) www.optimus.dk: 162.159.128.70 162.159.129.70 2606:4700:7::a29f:8046 2606:4700:7::a29f:8146 (AS13335)
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#

1 found

Selector	CNAME	Key
selector1	selector1-optimus-dk._domainkey.optimdk.onmicrosoft.com	RSA · ~1024 bit below 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: 2/10 · policy: -all

No problems found

🔗 TLSA / DANE#

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

🔐 DNSSEC#

72ms

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

🏷️ SOA#

39ms

Field	Value
Serial	2416807251
Primary NS (MNAME)	elma.ns.cloudflare.com
Responsible (RNAME)	dns@cloudflare.com
Refresh	10000s
Retry	2400s
Expire	604800s
Minimum (neg-cache TTL)	1800s

📋 Registration#

WHOIS fetched 2026-10-07 07:50:05

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2016-01-25
Expires	2027-01-31 (105d)

📋 WHOIS#

⏱️ Lookup Timing#

36ms

23ms

40ms

AAAA

34ms

TXT

177ms

CAA

30ms

HTTPS

34ms

TLSA

505ms

SOA

39ms

MTA-STS

45ms

DNSSEC

72ms

SRV

56ms

Total

988ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-07 07:42:00 shown	988ms	2 NS 2 A 1 MX	🔓 Insecure
2026-09-30 05:17:49	1257ms	2 NS 2 A 1 MX	🔓 Insecure
2026-09-27 07:54:53	1360ms	2 NS 2 A 1 MX	🔓 Insecure
2026-09-25 07:36:26	2693ms	2 NS 2 A 1 MX	🔓 Insecure
2026-09-15 06:03:17	2261ms	2 NS 2 A 1 MX	🔓 Insecure
2026-09-08 05:53:07	1946ms	2 NS 2 A 1 MX	🔓 Insecure
2026-08-10 17:57:29	6655ms	2 NS 2 A 1 MX	🔓 Insecure
2026-07-17 12:44:26	1479ms	2 NS 2 A 1 MX	❓ Unknown
2026-07-13 15:25:32	1398ms	2 NS 2 A 1 MX	❓ Unknown
2026-07-10 18:52:44	10859ms	2 NS 2 A 1 MX	🔓 Insecure
2026-07-02 10:10:26	2592ms	2 NS 2 A 1 MX	🔓 Insecure
2026-06-25 14:38:59	999ms	2 NS 2 A 1 MX	🔓 Insecure
2026-06-20 17:29:43	2467ms	2 NS 2 A 1 MX	🔓 Insecure
2026-06-18 04:53:18	2950ms	2 NS 2 A 1 MX	🔓 Insecure