u27.dk

📜 Historical scan 2026-10-11 14:24:48  ·  ← 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   135ms
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   110ms
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

🔌 SRV Records#

1 records   422ms
ServicePriorityWeightPortTarget
_imaps._tcp 0 0 993 mail.u27.dk

📝 TXT Records#

1 records   538ms
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=reject v=DMARC1; p=reject; rua=mailto:dmarc-reports@lists.e11.dk; ruf=mailto:dmarc-forensic@lists.e11.dk

📬 MTA-STS#

197ms
CheckResult
Status⚠️ Invalid
TXT record (_mta-sts)✓ Found
HTTPS policy✗ Missing / invalid
Policy ID20260904144925Z
Policy MX—

📈 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   145ms
Service / OwnerTypeCert association
SMTP _25._tcp.mx.brisson.dk DANE-EE · SPKI · SHA-256 FA203DECA691B5F6574B2C65ED8634B1…

🔐 DNSSEC#

170ms
CheckResult
Validation Status🔒 Secure
AD Flag (resolver validates)✓ Set
DS Record✓ Found
DNSKEY Record✓ Found
Flagsresolution failed: ncache nxrrset

🏷️ SOA#

105ms
FieldValue
Serial2026101102
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 (300d)

🔗 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
135ms
A
117ms
MX
110ms
AAAA
126ms
TXT
538ms
CAA
123ms
HTTPS
136ms
TLSA
145ms
SOA
105ms
MTA-STS
197ms
DNSSEC
170ms
SRV
422ms
Total
1701ms

🕐 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 shown 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 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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