optimus.dk

📜 Historical scan 2026-07-10 18:52:44 · ← Latest scan

⬇ 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 this scan: nameservers, A/AAAA, MX, TXT, SPF, DMARC, CAA, TLSA/DANE, MTA-STS, SRV and more.

🖥️ Nameservers#

2 records 31ms

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 33ms

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 37ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	300s	optimus-dk.mail.protection.outlook.com	2a01:111:f403:ca04::7 2a01:111:f403:ca04::e 2a01:111:f403:ca09::c 2a01:111:f403:ca09::e 52.101.68.18 52.101.68.25 52.101.68.27 52.101.73.2	mail-db4pr02cu00307.inbound.protection.outlook.com mail-db8pr02cu00106.inbound.protection.outlook.com mail-as8pr05cu00304.inbound.protection.outlook.com mail-am7pr05cu00206.inbound.protection.outlook.com mail-db4pr02cu00302.inbound.protection.outlook.com mail-db8pr02cu00101.inbound.protection.outlook.com mail-db7pr03cu00503.inbound.protection.outlook.com mail-as9pr07cu00302.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 32ms

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 33ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.77.197,172.67.211.110 ech=AEX+DQBBxQAgACCIjaDyUQPhJp6li3i7knfI5Ms5nsbAHanakerJ+r2NOwAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3032::6815:4dc5,2606:4700:3037::ac43:d36e

🔌 SRV Records#

1 records 54ms

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

📝 TXT Records#

6 records 196ms

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#

latest probe, not this scan · 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#

9060ms

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

🏷️ SOA#

0ms

Field	Value
Serial	2409187722
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#

31ms

33ms

37ms

AAAA

32ms

TXT

196ms

CAA

39ms

HTTPS

33ms

TLSA

739ms

SOA

0ms

MTA-STS

52ms

DNSSEC

9060ms

SRV

54ms

Total

10859ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-07 07:42:00	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 shown	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