duos.dk

📜 Historical scan 2026-06-21 05:59:41 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

duos.dk is a .dk domain with no delegation in this scan. It was registered on 8 August 2016 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. 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#

🖥️

No NS records found

🌍 A Records#

🌍

No A records found

📧 MX Records#

📧

No MX records found

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

📝

No TXT records found

✉️ SPF#

✗ No SPF record — mail spoofing not restricted

📨 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 2026-10-07 21:38:27

www	87.116.13.122 (AS31027) (address records, no CNAME)
www vs bare domain	Same network duos.dk: 87.116.13.122 (AS31027) www.duos.dk: 87.116.13.122 (AS31027)
Wildcard	Yes: any name under the zone resolves
Denial of existence	NSEC3 · 1 iteration · 1-byte salt RFC 9276 recommends 0 iterations and no salt
CDS / CDNSKEY	None 0 CDS, 0 CDNSKEY

✍️ DKIM keys#

2 found

Selector	CNAME	Key
s1	s1.domainkey.u37673289.wl040.sendgrid.net	RSA · ~2048 bit
s2	s2.domainkey.u37673289.wl040.sendgrid.net	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.

🔗 TLSA / DANE#

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

🔐 DNSSEC#

471ms

Check	Result
Validation Status	Not applicable: the domain has no delegation, so there is no zone to validate (stored verdict: ❓ Unknown).
AD Flag (resolver validates)	✗ Not set
DS Record	✗ Not found
DNSKEY Record	✗ Not found
Flags	resolution failed: failure

🏷️ SOA#

✗ No SOA record found

📋 Registration#

WHOIS fetched 2026-10-11 22:38:15

Field	Value
Registrar	A/S SCANNET
Registered	2016-08-08
Expires	2027-08-31 (318d)

🔗 Same registrant#

2 domains

Other .dk domains whose WHOIS registrant has the same name and postal address. Matched on a keyed hash: the registrant's details are not stored or shown. Covers only domains whose WHOIS we have fetched (refreshed about monthly).

Domain	Registrar
duos-bpa.dk	Punktum dk A/S (direct)
duos-vikar.dk	Punktum dk A/S (direct)

📋 WHOIS#

⏱️ Lookup Timing#

200ms

212ms

166ms

AAAA

215ms

TXT

500ms

CAA

163ms

HTTPS

206ms

TLSA

16ms

SOA

202ms

MTA-STS

196ms

DNSSEC

471ms

SRV

287ms

Total

1166ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-09-25 18:36:40	645ms	2 NS 1 A 3 MX	🔒 Secure
2026-09-18 20:18:07	1245ms	2 NS 1 A 3 MX	🔒 Secure
2026-09-10 14:43:48	671ms	2 NS 1 A 3 MX	🔒 Secure
2026-09-03 16:21:32	699ms	2 NS 1 A 3 MX	🔒 Secure
2026-06-23 08:33:07	1104ms	2 NS 1 A 3 MX	🔒 Secure
2026-06-21 05:59:41 shown	1166ms	0 NS 0 A 0 MX	❓ Unknown
2026-06-19 23:36:00	1382ms	2 NS 1 A 3 MX	🔒 Secure
2026-06-17 05:09:41	29525ms	2 NS 1 A 3 MX	🔒 Secure
2026-06-17 05:06:17	758ms	2 NS 1 A 3 MX	🔒 Secure
2026-06-17 05:03:47	3246ms	2 NS 1 A 3 MX	🔒 Secure
2026-06-17 05:00:58	2947ms	2 NS 1 A 3 MX	🔒 Secure