u27.dk

📜 Historical scan 2026-09-13 17:01:06  ·  ← 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   241ms
NameserverIP addressesPTRASN / 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   252ms
PriorityTTLMail ServerIP addressesPTRASN
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

📝 TXT Records#

1 records   494ms
TXT Record
v=spf1 mx include:_spf.brisson.dk -all

✉️ SPF#

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

📨 DMARC#

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

📬 MTA-STS#

526ms
CheckResult
Status🧪 Testing
TXT record (_mta-sts)✓ Found
HTTPS policy✓ Valid
Modetesting
Policy ID20260904144925Z
max_age86400s
Policy MXmx.brisson.dk

📈 TLSRPT#

StatusReport 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
wwwNXDOMAIN
www vs bare domainNeither resolves
u27.dk: no address
www.u27.dk: no address
WildcardNo
Denial of existenceNSEC zone can be walked (all names enumerable)
CDS / CDNSKEYPublished: key rollovers can be automated with the registry (RFC 7344/8078) 1 CDS, 1 CDNSKEY

✍️ DKIM keys#

1 found
SelectorCNAMEKey
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   199ms
Service / OwnerTypeCert association
SMTP _25._tcp.mx.brisson.dk DANE-EE · SPKI · SHA-256 FA203DECA691B5F6574B2C65ED8634B1…

🔐 DNSSEC#

324ms
CheckResult
Validation Status🔒 Secure
AD Flag (resolver validates)✓ Set
DS Record✓ Found
DNSKEY Record✓ Found
Flagsresolution failed: ncache nxrrset

🏷️ SOA#

0ms
FieldValue
Serial2026091300
Primary NS (MNAME)ns.brisson.dk
Responsible (RNAME)hostmaster@brisson.dk
Refresh86400s
Retry7200s
Expire2419200s
Minimum (neg-cache TTL)300s

📋 Registration#

WHOIS fetched 2026-10-11 15:08:13
FieldValue
RegistrarSimply.com A/S
Registered2026-08-17
Expires2027-08-16 (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).

DomainRegistrar
v37.dkPunktum dk A/S (direct)
📋 WHOIS#

⏱️ Lookup Timing#

NS
241ms
A
142ms
MX
252ms
AAAA
148ms
TXT
494ms
CAA
93ms
HTTPS
90ms
TLSA
199ms
SOA
0ms
MTA-STS
526ms
DNSSEC
324ms
SRV
224ms
Total
2709ms

🕐 Scan History#

Scanned AtDurationRecordsDNSSEC
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 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 shown 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
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