gu.dk

📜 Historical scan 2026-06-17 10:40:28  ·  ← Latest scan
⬇ Zone File 📜 Timeline & History ⚡ Scan Now

gu.dk is a .dk domain served by 4 nameservers (ns1-03.azure-dns.com, ns2-03.azure-dns.net, ns3-03.azure-dns.org and 1 more). It was registered on 22 April 2002 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 86.58.160.162 is hosted by Sentia Denmark A/S (AS47292) in Denmark. 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#

4 records   31ms
NameserverIP addressesPTRASN / ISP
ns1-03.azure-dns.com 13.107.236.3
2603:1061:0:700::3		 ns1-03.azure-dns.com
ns1-03.azure-dns.com		 AS8075 Microsoft Corporation
AS8075 Microsoft Corporation
ns2-03.azure-dns.net 150.171.21.3
2620:1ec:8ec:700::3		 ns2-03.azure-dns.net
ns2-03.azure-dns.net		 AS8075 Microsoft Corporation
AS8075 Microsoft Corporation
ns3-03.azure-dns.org 204.14.183.3
2a01:111:4000:700::3		 ns3-03.azure-dns.org
ns3-03.azure-dns.org		 AS8075 Microsoft Corporation
AS8075 Microsoft Corporation
ns4-03.azure-dns.info 208.84.5.3
2620:1ec:bda:700::3		 ns4-03.azure-dns.info
ns4-03.azure-dns.info		 AS8075 Microsoft Corporation
AS8075 Microsoft Corporation

🌍 A Records#

1 records   31ms
IPTTLPTRASNISP / OrgCIDRCountryCity
86.58.160.162 — — AS47292 Sentia Denmark A/S 86.58.160.0/21 🇩🇰 Denmark Glostrup Municipality

📧 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#

2 records   112ms
TXT Record
facebook-domain-verification=b9gjmafnx3fhckqq3gobpkrsho6r3h
v=spf1 -all

✉️ SPF#

PolicyRecord (gu.dk)
-all (hard fail) v=spf1 -all

📨 DMARC#

PolicyRecord (_dmarc.gu.dk)
p=reject v=DMARC1; p=reject; rua=mailto:62de94a87c3dc@dmarc.centerasecurity.com;

📬 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 2026-10-16 22:42:23
www CNAMEgu.dk (all on gu.dk)
www vs bare domainSame network
WildcardNo
Denial of existenceCompact NSEC (RFC 9824, "black lies") not walkable
CDS / CDNSKEYNone 0 CDS, 0 CDNSKEY

🔎 SPF check#

zone-wide SPF report

DNS lookups: 0/10 · policy: -all

No problems found

🔗 TLSA / DANE#

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

🔐 DNSSEC#

94ms
CheckResult
Validation Status🔒 Secure
AD Flag (resolver validates)✓ Set
DS Record✓ Found
DNSKEY Record✓ Found
Flagsfully validated

🏷️ SOA#

29ms
FieldValue
Serial2017111700
Primary NS (MNAME)ns1-03.azure-dns.com
Responsible (RNAME)hostmaster@gyldendal.dk
Refresh3600s
Retry600s
Expire604800s
Minimum (neg-cache TTL)1800s

📋 Registration#

WHOIS fetched 2026-10-18 18:53:51
FieldValue
RegistrarWEB SOLUTIONS A/S
Registered2002-04-22
Expires2027-06-30 (254d)

🔗 Same registrant#

40 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).

DomainRegistrar
abacus.dkWEB SOLUTIONS A/S
blekingegadebanden.dkWEB SOLUTIONS A/S
bobbyzachariae.dkWEB SOLUTIONS A/S
bogfestival.dkWEB SOLUTIONS A/S
cicero.dkWEB SOLUTIONS A/S
danskbrikker.dkWEB SOLUTIONS A/S
denkæmpestorelæsedag.dkWEB SOLUTIONS A/S
denrødekuvert.dkWEB SOLUTIONS A/S
digitalretstavning.dkWEB SOLUTIONS A/S
europas-lande.dkWEB SOLUTIONS A/S
europaslande.dkWEB SOLUTIONS A/S
faktaogfiktion.dkWEB SOLUTIONS A/S
forløbsbygger.dkWEB SOLUTIONS A/S
formelit.dkWEB SOLUTIONS A/S
frkjensen.dkWEB SOLUTIONS A/S
fupz.dkWEB SOLUTIONS A/S
gyldendalordbog.dkWEB SOLUTIONS A/S
gyldendals-boghandel.dkWEB SOLUTIONS A/S
gyldendalsolutions.dkWEB SOLUTIONS A/S
gyldendalsordbog.dkWEB SOLUTIONS A/S
gyldendalsordbøger.dkWEB SOLUTIONS A/S
hans-reitzel.dkWEB SOLUTIONS A/S
hansreitzel.dkWEB SOLUTIONS A/S
iep.dkWEB SOLUTIONS A/S
kvikdansk.dkWEB SOLUTIONS A/S
laeserpanel.dkWEB SOLUTIONS A/S
lovnoeglen.dkWEB SOLUTIONS A/S
medicinskkompendium.dkWEB SOLUTIONS A/S
myboox.dkWEB SOLUTIONS A/S
prettyink.dkWEB SOLUTIONS A/S
room606.dkWEB SOLUTIONS A/S
rødeordbøger.dkWEB SOLUTIONS A/S
samlerensforlag.dkWEB SOLUTIONS A/S
skolebib.dkWEB SOLUTIONS A/S
skonlitteratur.dkWEB SOLUTIONS A/S
studybot.dkWEB SOLUTIONS A/S
systime.dkWEB SOLUTIONS A/S
trane.dkWEB SOLUTIONS A/S
tranetest.dkWEB SOLUTIONS A/S
verdens-dyr.dkWEB SOLUTIONS A/S
📋 WHOIS#

⏱️ Lookup Timing#

NS
31ms
A
31ms
MX
31ms
AAAA
32ms
TXT
112ms
CAA
34ms
HTTPS
30ms
TLSA
43ms
SOA
29ms
MTA-STS
38ms
DNSSEC
94ms
SRV
0ms
Total
474ms

🕐 Scan History#

Scanned AtDurationRecordsDNSSEC
2026-10-01 00:55:58 490ms 4 NS 1 A 0 MX 🔒 Secure
2026-08-26 13:22:42 2471ms 4 NS 1 A 0 MX 🔒 Secure
2026-06-17 10:42:01 598ms 4 NS 1 A 0 MX 🔒 Secure
2026-06-17 10:40:28 shown 474ms 4 NS 1 A 0 MX 🔒 Secure
dhd.dk [/] search Domains, Hosts & DNS — .dk zone