optilink.dk

📜 Historical scan 2026-07-02 12:55:53 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

optilink.dk is a .dk domain served by 2 nameservers (phoenix.ns.cloudflare.com, rommy.ns.cloudflare.com). It was registered on 24 November 2018 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.41.133 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by mx.simply.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 373ms

Nameserver	IP addresses	PTR	ASN / ISP
phoenix.ns.cloudflare.com	108.162.194.201 162.159.38.201 172.64.34.201 2606:4700:50::a29f:26c9 2803:f800:50::6ca2:c2c9 2a06:98c1:50::ac40:22c9	phoenix.ns.cloudflare.com phoenix.ns.cloudflare.com phoenix.ns.cloudflare.com phoenix.ns.cloudflare.com phoenix.ns.cloudflare.com phoenix.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
rommy.ns.cloudflare.com	108.162.195.20 162.159.44.20 172.64.35.20 2606:4700:58::a29f:2c14 2803:f800:50::6ca2:c314 2a06:98c1:50::ac40:2314	rommy.ns.cloudflare.com rommy.ns.cloudflare.com rommy.ns.cloudflare.com rommy.ns.cloudflare.com rommy.ns.cloudflare.com rommy.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 398ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.21.41.133	300s	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.165.3	300s	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records#

1 records 388ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	300s	mx.simply.com	94.231.106.20	mx.simply.com	AS48854 team.blue Denmark A/S

📧 Autodiscover / Autoconfig#

Service	CNAME / IP
🔷 Autodiscover	104.21.41.133
🔶 Autoconfig	maildiscover.simply.com → 94.231.108.222

🔷 AAAA Records (IPv6)#

2 records 345ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3031::6815:2985	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3035::ac43:a503	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records#

1 records 427ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.41.133,172.67.165.3 ech=AEX+DQBBrwAgACC0BaqYsgnthcwP8njJ3mJSUhTMN0KIqKyLVC4Z19MHCwAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3031::6815:2985,2606:4700:3035::ac43:a503

🔌 SRV Records#

2 records 517ms

Service	Priority	Weight	Port	Target
_autodiscover._tcp	10	10	443	maildiscover.simply.com
_sipfederationtls._tcp	1	5061	5061	sipfed.online.lync.com

📝 TXT Records#

📝

No TXT records found

✉️ SPF#

✗ No SPF record — mail spoofing not restricted

📨 DMARC#

Policy	Record (_dmarc.optilink.dk)
p=reject	v=DMARC1; p=reject; rua=mailto:dmarc@robot.simply.com; ruf=mailto:dmarc@robot.simply.com;

📬 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 2026-10-14 19:45:13

www	104.21.41.133 172.67.165.3 2606:4700:3031::6815:2985 2606:4700:3033::ac43:a503 (AS13335) (address records, no CNAME)
www vs bare domain	Same network optilink.dk: 104.21.41.133 172.67.165.3 2606:4700:3031::6815:2985 2606:4700:3033::ac43:a503 (AS13335) www.optilink.dk: 104.21.41.133 172.67.165.3 2606:4700:3031::6815:2985 2606:4700:3033::ac43:a503 (AS13335)
Wildcard	Yes: any name under the zone resolves

🔗 TLSA / DANE#

2 records 1032ms

Service / Owner	Type	Cert association
SMTP _25._tcp.mx.simply.com	DANE-EE · SPKI · SHA-256	A9D603AF4D7ED6B9246B4B68500CD6F2…
SMTP _25._tcp.mx.simply.com	DANE-EE · SPKI · SHA-256	97A3BA009F39C761BFFB6574340E8138…

🔐 DNSSEC#

574ms

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	2408375904
Primary NS (MNAME)	phoenix.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 06:30:12

Field	Value
Registrar	Simply.com A/S
Registered	2018-11-24
Expires	2026-11-30 (42d)

📋 WHOIS#

⏱️ Lookup Timing#

373ms

398ms

388ms

AAAA

345ms

TXT

971ms

CAA

375ms

HTTPS

427ms

TLSA

1032ms

SOA

0ms

MTA-STS

452ms

DNSSEC

574ms

SRV

517ms

Total

10559ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-05 05:53:15	768ms	2 NS 2 A 1 MX	🔓 Insecure
2026-10-04 05:39:07	542ms	2 NS 2 A 1 MX	🔓 Insecure
2026-10-04 02:47:49	715ms	2 NS 2 A 1 MX	🔓 Insecure
2026-10-02 02:37:41	777ms	2 NS 2 A 1 MX	🔓 Insecure
2026-10-01 02:35:01	665ms	2 NS 2 A 1 MX	🔓 Insecure
2026-09-23 15:49:47	789ms	2 NS 2 A 1 MX	🔓 Insecure
2026-09-19 05:13:24	1852ms	2 NS 2 A 1 MX	🔓 Insecure
2026-09-12 03:10:31	1726ms	2 NS 2 A 1 MX	🔓 Insecure
2026-09-05 02:56:37	1236ms	2 NS 2 A 1 MX	🔓 Insecure
2026-08-28 06:01:35	9661ms	2 NS 2 A 1 MX	🔓 Insecure
2026-08-25 12:55:14	1664ms	2 NS 2 A 1 MX	🔓 Insecure
2026-08-24 12:43:05	10052ms	2 NS 2 A 1 MX	🔓 Insecure
2026-07-08 20:22:07	1950ms	2 NS 2 A 1 MX	🔓 Insecure
2026-07-02 12:55:53 shown	10559ms	2 NS 2 A 1 MX	🔓 Insecure
2026-06-22 15:54:17	831ms	4 NS 1 A 1 MX	🔒 Secure
2026-06-22 08:39:38	1172ms	0 NS 0 A 0 MX	❓ Unknown
2026-06-22 01:38:26	595ms	4 NS 1 A 1 MX	⚠️ Bogus
2026-06-18 02:25:28	844ms	4 NS 1 A 1 MX	🔒 Secure