u27.dk

📜 Historical scan 2026-10-04 05:21:26 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

u27.dk is a .dk domain served by 2 nameservers (ns.brisson.dk, ns2.brisson.dk). It was registered on 17 August 2026 (WHOIS) and first appeared in the .dk zone on 18 August 2026. Mail is handled by mx.brisson.dk. The zone is DNSSEC-signed and validates, publishes a DMARC policy and has no IPv6 address. 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 57ms

Nameserver	IP addresses	PTR	ASN / ISP
ns.brisson.dk	80.209.68.5	80.209.68.5.static.fibianet.dk	AS44869 FIBIA P/S
ns2.brisson.dk	80.209.68.3	80.209.68.3.static.fibianet.dk	AS44869 FIBIA P/S

🌍 A Records#

🌍

No A records found

📧 MX Records#

1 records 40ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	86400s	mx.brisson.dk	80.209.68.5	80.209.68.5.static.fibianet.dk	AS44869 FIBIA P/S

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

🔌 SRV Records#

1 records 81ms

Service	Priority	Weight	Port	Target
_imaps._tcp	0	0	993	mail.u27.dk

📝 TXT Records#

1 records 213ms

TXT Record
v=spf1 mx include:_spf.brisson.dk -all

✉️ SPF#

Policy	Record (u27.dk)
-all (hard fail)	v=spf1 mx include:_spf.brisson.dk -all

📨 DMARC#

Policy	Record (_dmarc.u27.dk)
p=reject	v=DMARC1; p=reject; rua=mailto:dmarc-reports@lists.e11.dk; ruf=mailto:dmarc-forensic@lists.e11.dk

📬 MTA-STS#

224ms

Check	Result
Status	🧪 Testing
TXT record (_mta-sts)	✓ Found
HTTPS policy	✓ Valid
Mode	testing
Policy ID	20260904144925Z
max_age	86400s
Policy MX	mx.brisson.dk

📈 TLSRPT#

Status	Report address (rua)
✓ Enabled	mailto:tlsrpt-reports@lists.e11.dk

📜 CAA Records#

✗ No CAA records — any CA may issue certificates

🧩 Web & zone#

latest probe, not this scan · checked 2026-10-17 23:37:26

www	NXDOMAIN
www vs bare domain	Neither resolves u27.dk: no address www.u27.dk: no address
Wildcard	No
Denial of existence	NSEC zone can be walked (all names enumerable)
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
default	—	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.

🔎 SPF check#

zone-wide SPF report

DNS lookups: 2/10 · policy: -all

No problems found

🔗 TLSA / DANE#

1 records 79ms

Service / Owner	Type	Cert association
SMTP _25._tcp.mx.brisson.dk	DANE-EE · SPKI · SHA-256	FA203DECA691B5F6574B2C65ED8634B1…

🔐 DNSSEC#

105ms

Check	Result
Validation Status	🔒 Secure
AD Flag (resolver validates)	✓ Set
DS Record	✓ Found
DNSKEY Record	✓ Found
Flags	resolution failed: ncache nxrrset

🏷️ SOA#

47ms

Field	Value
Serial	2026100300
Primary NS (MNAME)	ns.brisson.dk
Responsible (RNAME)	hostmaster@brisson.dk
Refresh	86400s
Retry	7200s
Expire	2419200s
Minimum (neg-cache TTL)	300s

📋 Registration#

WHOIS fetched 2026-10-11 15:08:13

Field	Value
Registrar	Simply.com A/S
Registered	2026-08-17
Expires	2027-08-16 (301d)

🔗 Same registrant#

1 domain

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
v37.dk	Punktum dk A/S (direct)

📋 WHOIS#

⏱️ Lookup Timing#

57ms

53ms

40ms

AAAA

51ms

TXT

213ms

CAA

54ms

HTTPS

55ms

TLSA

79ms

SOA

47ms

MTA-STS

224ms

DNSSEC

105ms

SRV

81ms

Total

678ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-17 23:37:26	878ms	2 NS 0 A 1 MX	🔒 Secure
2026-10-16 22:55:43	610ms	2 NS 0 A 1 MX	🔒 Secure
2026-10-12 15:13:47	846ms	2 NS 0 A 1 MX	🔒 Secure
2026-10-11 14:24:48	1701ms	2 NS 0 A 1 MX	🔒 Secure
2026-10-09 07:26:05	2870ms	2 NS 0 A 1 MX	🔒 Secure
2026-10-08 07:21:52	702ms	2 NS 0 A 1 MX	🔒 Secure
2026-10-04 05:21:26 shown	678ms	2 NS 0 A 1 MX	🔒 Secure
2026-10-03 05:20:06	1659ms	2 NS 0 A 1 MX	🔒 Secure
2026-10-02 05:16:44	731ms	2 NS 0 A 1 MX	🔒 Secure
2026-09-30 04:59:28	1032ms	2 NS 0 A 1 MX	🔒 Secure
2026-09-28 23:16:48	595ms	2 NS 0 A 1 MX	🔒 Secure
2026-09-27 22:47:45	766ms	2 NS 0 A 1 MX	🔒 Secure
2026-09-24 16:02:29	674ms	2 NS 0 A 1 MX	🔒 Secure
2026-09-23 14:46:30	643ms	2 NS 0 A 1 MX	🔒 Secure
2026-09-22 02:04:48	606ms	2 NS 0 A 1 MX	🔒 Secure
2026-09-20 18:40:40	1010ms	2 NS 0 A 1 MX	🔒 Secure
2026-09-13 17:01:06	2709ms	2 NS 0 A 1 MX	🔒 Secure
2026-09-12 10:43:51	915ms	2 NS 0 A 1 MX	🔒 Secure
2026-09-05 09:53:49	535ms	2 NS 0 A 1 MX	🔒 Secure
2026-08-27 19:38:51	428ms	2 NS 0 A 1 MX	🔒 Secure
2026-08-26 18:33:46	747ms	2 NS 0 A 1 MX	🔒 Secure
2026-08-26 07:09:42	735ms	2 NS 0 A 1 MX	🔒 Secure
2026-08-23 19:17:08	864ms	2 NS 0 A 1 MX	🔒 Secure
2026-08-22 13:57:16	929ms	2 NS 0 A 1 MX	🔓 Insecure
2026-08-18 08:39:01	4210ms	3 NS 0 A 0 MX	🔒 Secure