handelsskolen-silkeborg.dk

Records from scan: 2026-10-20 04:33:17 · 1197ms total

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

handelsskolen-silkeborg.dk is a .dk domain served by 3 nameservers (ns.efif.dk, ns2.efif.dk, ns3.efif.dk). It was registered on 2 March 2010 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 185.21.42.245 is hosted by team.blue Denmark A/S (AS48854) in Denmark. Mail is handled by handelsskolensilkeborg-dk03c.mail.protection.outlook.com. The zone is DNSSEC-signed and validates, publishes a DMARC policy and has no IPv6 address. Below are all of its DNS records from our latest scan: nameservers, A/AAAA, MX, TXT, SPF, DMARC, CAA, TLSA/DANE, MTA-STS, SRV and more.

🖥️ Nameservers#

3 records 38ms

Nameserver	IP addresses	PTR	ASN / ISP
ns.efif.dk	195.254.168.23	ns.efif.dk	AS51073 Aarhus Business College
ns2.efif.dk	195.254.168.12	ns2.efif.dk	AS51073 Aarhus Business College
ns3.efif.dk	20.23.170.35	—	AS8075 Microsoft Corporation

🌍 A Records#

1 records 53ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
185.21.42.245	86400s	—	AS48854	team.blue Denmark A/S	185.21.40.0/22	🇩🇰 Denmark	—

📧 MX Records#

1 records 41ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	300s	handelsskolensilkeborg-dk03c.mail.protection.outlook.com	2a01:111:f403:c967::a 2a01:111:f403:ca04::4 2a01:111:f403:ca04::9 2a01:111:f403:ca3c::a 52.101.68.21 52.101.73.126 52.101.91.153 52.101.91.21	mail-cpjpr05cu00102.inbound.protection.outlook.com mail-db4pr02cu00204.inbound.protection.outlook.com mail-db7pr03cu00601.inbound.protection.outlook.com mail-zrxpr07cu00102.inbound.protection.outlook.com mail-db4pr02cu00205.inbound.protection.outlook.com mail-am8pr83cu00106.inbound.protection.outlook.com mail-matpr04cu00101.inbound.protection.outlook.com mail-matpr05cu00105.inbound.protection.outlook.com	AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

🔌 SRV Records#

1 records 76ms

Service	Priority	Weight	Port	Target
_autodiscover._tcp	10	10	443	webmail.efif.dk

📝 TXT Records#

4 records 173ms

TXT Record
2MGV3soHdpzy9J+j827KnstBM0aZ4dold4mO80LG3gQbLHMtsfl05JWBYxWyowss+efxT2ZAvm2hjhdpMk8ENA==
Handelsskolen Silkeborg
MS=ms19778367
v=spf1 redirect=_spf.efif.dk

✉️ SPF#

Policy	Record (handelsskolen-silkeborg.dk)
redirect=_spf.efif.dk	v=spf1 redirect=_spf.efif.dk

📨 DMARC#

Policy	Record (_dmarc.handelsskolen-silkeborg.dk)
p=reject	v=DMARC1; p=reject; pct=100; ruf=mailto:analyze@efif.dk; rua=mailto:analyze@efif.dk

📬 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#

checked 2026-10-20 04:33:17

www	185.21.42.245 (AS48854) (address records, no CNAME)
www vs bare domain	Same network handelsskolen-silkeborg.dk: 185.21.42.245 (AS48854) www.handelsskolen-silkeborg.dk: 185.21.42.245 (AS48854)
Wildcard	No
Denial of existence	NSEC3 · 50 iterations · 8-byte salt RFC 9276 recommends 0 iterations and no salt
CDS / CDNSKEY	None 0 CDS, 0 CDNSKEY

✍️ DKIM keys#

2 found

Selector	CNAME	Key
selector1	selector1-handelsskolensilkeborg-dk03c._domainkey.efif.onmicrosoft.com	RSA · ~1024 bit below 2048 bit
selector2	selector2-handelsskolensilkeborg-dk03c._domainkey.efif.onmicrosoft.com	RSA · ~1024 bit below 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: 3/10 · policy: -all

No problems found

🔗 TLSA / DANE#

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

🔐 DNSSEC#

69ms

Check	Result
Validation Status	🔒 Secure
AD Flag (resolver validates)	✓ Set
DS Record	✓ Found
DNSKEY Record	✓ Found
Flags	fully validated

🏷️ SOA#

39ms

Field	Value
Serial	2012012471
Primary NS (MNAME)	ns.efif.dk
Responsible (RNAME)	dns-zc@efif.dk
Refresh	14400s
Retry	3600s
Expire	2419200s
Minimum (neg-cache TTL)	86400s

📋 Registration#

WHOIS fetched 2026-10-14 16:06:49

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2010-03-02
Expires	2027-03-31 (161d)

🔗 Same registrant#

13 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
c360.dk	Punktum dk A/S (direct)
college360.dk	Punktum dk A/S (direct)
handelsskolensilkeborg.dk	Punktum dk A/S (direct)
hssilke.dk	Punktum dk A/S (direct)
hssilkeborg.dk	Punktum dk A/S (direct)
hsskyen.dk	Punktum dk A/S (direct)
kursuscenteret.dk	Punktum dk A/S (direct)
learnsilkeborg.dk	Punktum dk A/S (direct)
piu-sekretariatet.dk	Punktum dk A/S (direct)
piu.dk	Punktum dk A/S (direct)
silkeborg-handelsskole.dk	Punktum dk A/S (direct)
silkeborghs.dk	Punktum dk A/S (direct)
silkehs.dk	Punktum dk A/S (direct)

📋 WHOIS#

⏱️ Lookup Timing#

38ms

53ms

41ms

AAAA

37ms

TXT

173ms

CAA

56ms

HTTPS

56ms

TLSA

661ms

SOA

39ms

MTA-STS

49ms

DNSSEC

69ms

SRV

76ms

Total

1197ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-20 04:33:17 shown	1197ms	3 NS 1 A 1 MX	🔒 Secure
2026-10-14 15:44:29	4473ms	3 NS 1 A 1 MX	🔒 Secure
2026-10-08 16:10:42	930ms	3 NS 1 A 1 MX	🔒 Secure
2026-10-06 15:39:07	2409ms	3 NS 1 A 1 MX	🔒 Secure
2026-10-02 15:04:41	1154ms	3 NS 1 A 1 MX	🔒 Secure
2026-09-29 14:51:24	1735ms	3 NS 1 A 1 MX	🔒 Secure
2026-09-28 05:09:54	1958ms	3 NS 1 A 1 MX	🔒 Secure
2026-09-27 04:47:03	2676ms	3 NS 1 A 1 MX	🔒 Secure
2026-09-27 03:40:20	1409ms	3 NS 1 A 1 MX	🔒 Secure
2026-09-24 02:30:02	3192ms	3 NS 1 A 1 MX	🔒 Secure
2026-09-21 05:07:05	1006ms	3 NS 1 A 1 MX	🔒 Secure
2026-09-17 07:08:26	2293ms	3 NS 1 A 1 MX	🔒 Secure
2026-09-10 06:25:20	2623ms	3 NS 1 A 1 MX	🔒 Secure
2026-09-04 16:56:29	695ms	3 NS 1 A 1 MX	🔒 Secure
2026-08-31 02:11:34	1419ms	3 NS 1 A 1 MX	🔒 Secure
2026-08-26 23:17:36	1152ms	3 NS 1 A 1 MX	🔒 Secure
2026-08-25 04:12:03	769ms	3 NS 1 A 1 MX	🔒 Secure
2026-08-18 21:17:57	5143ms	3 NS 1 A 1 MX	🔒 Secure
2026-08-16 19:28:45	2410ms	3 NS 1 A 1 MX	🔒 Secure
2026-08-15 10:10:08	6592ms	3 NS 1 A 1 MX	🔒 Secure
2026-08-14 02:14:02	5969ms	3 NS 1 A 1 MX	🔒 Secure
2026-08-08 21:57:46	7410ms	3 NS 1 A 1 MX	🔒 Secure
2026-07-27 02:20:10	1345ms	3 NS 1 A 1 MX	🔒 Secure
2026-07-23 00:13:42	1580ms	3 NS 1 A 1 MX	🔒 Secure
2026-07-21 23:41:47	3221ms	3 NS 1 A 1 MX	🔒 Secure