strong.dk

📜 Historical scan 2026-06-24 18:56:33 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

strong.dk is a .dk domain served by 2 nameservers (dakota.ns.cloudflare.com, susan.ns.cloudflare.com). It was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.87.13 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by mta-gw.infomaniak.ch. 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 168ms

Nameserver	IP addresses	PTR	ASN / ISP
dakota.ns.cloudflare.com	108.162.195.79 162.159.44.79 172.64.35.79 2606:4700:58::a29f:2c4f 2803:f800:50::6ca2:c34f 2a06:98c1:50::ac40:234f	dakota.ns.cloudflare.com dakota.ns.cloudflare.com dakota.ns.cloudflare.com dakota.ns.cloudflare.com dakota.ns.cloudflare.com dakota.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
susan.ns.cloudflare.com	108.162.194.199 162.159.38.199 172.64.34.199 2606:4700:50::a29f:26c7 2803:f800:50::6ca2:c2c7 2a06:98c1:50::ac40:22c7	susan.ns.cloudflare.com susan.ns.cloudflare.com susan.ns.cloudflare.com susan.ns.cloudflare.com susan.ns.cloudflare.com susan.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 214ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.21.87.13	300s	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.139.36	300s	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records#

1 records 217ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
5	300s	mta-gw.infomaniak.ch	2001:1600:0:aaaa::1:3 2001:1600:0:aaaa::1:4 83.166.143.57 83.166.143.58	— — mx01.infomaniak.ch mx02.infomaniak.ch	AS29222 Infomaniak Network SA AS29222 Infomaniak Network SA AS29222 Infomaniak Network SA AS29222 Infomaniak Network SA

📧 Autodiscover / Autoconfig#

Service	CNAME / IP
🔷 Autodiscover	infomaniak.com → 185.125.25.1
🔶 Autoconfig	infomaniak.com → 185.125.25.1

🔷 AAAA Records (IPv6)#

2 records 232ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3033::ac43:8b24	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3034::6815:570d	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records#

1 records 221ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.87.13,172.67.139.36 ech=AEX+DQBBpwAgACDo/XZK9WMmGUCu8Y1c0FhuQkvvhv7Eh3p+EjEWTF1DbgAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3033::ac43:8b24,2606:4700:3034::6815:570d

🔌 SRV Records#

1 records 975ms

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

📝 TXT Records#

1 records 807ms

TXT Record
v=spf1 include:spf.infomaniak.ch -all

✉️ SPF#

Policy	Record (strong.dk)
-all (hard fail)	v=spf1 include:spf.infomaniak.ch -all

📨 DMARC#

Policy	Record (_dmarc.strong.dk)
p=reject	v=DMARC1; p=reject; rua=mailto:dmarc@strong.dk; ruf=mailto:dmarc-failures@strong.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 2026-10-12 08:16:42

www	188.114.96.1 188.114.97.1 2a06:98c1:3120::1 2a06:98c1:3121::1 (AS13335) (address records, no CNAME)
www vs bare domain	Same network strong.dk: 188.114.96.1 188.114.97.1 2606:4700:3033::ac43:8b24 2606:4700:3034::6815:570d (AS13335) www.strong.dk: 188.114.96.1 188.114.97.1 2a06:98c1:3120::1 2a06:98c1:3121::1 (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

🔎 SPF check#

zone-wide SPF report

DNS lookups: 3/10 · policy: -all

No problems found

🔗 TLSA / DANE#

1 records 480ms

Service / Owner	Type	Cert association
SMTP _25._tcp.mta-gw.infomaniak.ch	DANE-EE · SPKI · SHA-256	01BBBC3A65E5F2067AA43DBAB107583E…

🔐 DNSSEC#

582ms

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

🏷️ SOA#

250ms

Field	Value
Serial	2407501375
Primary NS (MNAME)	dakota.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#

168ms

214ms

217ms

AAAA

232ms

TXT

807ms

CAA

214ms

HTTPS

221ms

TLSA

480ms

SOA

250ms

MTA-STS

222ms

DNSSEC

582ms

SRV

975ms

Total

5428ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-03 15:31:12	776ms	2 NS 2 A 1 MX	🔓 Insecure
2026-09-30 15:24:38	1062ms	2 NS 2 A 1 MX	🔓 Insecure
2026-09-25 19:22:14	2840ms	2 NS 2 A 1 MX	🔓 Insecure
2026-09-23 18:28:51	3023ms	2 NS 2 A 1 MX	🔓 Insecure
2026-09-22 14:56:24	1151ms	2 NS 2 A 1 MX	🔓 Insecure
2026-09-13 17:51:53	1320ms	2 NS 2 A 1 MX	🔓 Insecure
2026-09-06 10:35:46	3140ms	2 NS 2 A 1 MX	🔓 Insecure
2026-08-09 12:14:45	10281ms	2 NS 2 A 1 MX	🔓 Insecure
2026-08-06 08:45:20	2052ms	2 NS 2 A 1 MX	🔓 Insecure
2026-07-25 09:42:02	2020ms	2 NS 2 A 1 MX	🔓 Insecure
2026-07-17 04:45:11	9216ms	2 NS 2 A 1 MX	❓ Unknown
2026-06-27 01:30:07	3177ms	2 NS 2 A 1 MX	🔓 Insecure
2026-06-24 18:56:33 shown	5428ms	2 NS 2 A 1 MX	🔓 Insecure
2026-06-21 11:58:01	1403ms	2 NS 2 A 1 MX	🔓 Insecure
2026-06-17 15:22:45	934ms	2 NS 2 A 1 MX	🔓 Insecure