silkeborghs.dk

📜 Historical scan 2026-10-08 23:13:47 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

silkeborghs.dk is a .dk domain served by 3 nameservers (ns.efif.dk, ns2.efif.dk, ns3.efif.dk). It was registered on 15 January 2009 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 178.251.4.118 is hosted by team.blue Denmark A/S (AS48854) in Denmark. Mail is handled by silkeborghs-dk.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 this scan: nameservers, A/AAAA, MX, TXT, SPF, DMARC, CAA, TLSA/DANE, MTA-STS, SRV and more.

🖥️ Nameservers#

3 records 48ms

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 40ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
178.251.4.118	300s	vm0845.enterprisecloud.nu	AS48854	team.blue Denmark A/S	178.251.0.0/21	🇩🇰 Denmark	—

📧 MX Records#

1 records 45ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	300s	silkeborghs-dk.mail.protection.outlook.com	2a01:111:f403:ca04::b 2a01:111:f403:ca04::c 2a01:111:f403:ca09::26 2a01:111:f403:ca3c::a 52.101.185.21 52.101.209.31 52.101.68.12 52.101.68.25	mail-dbbpr03cu00103.inbound.protection.outlook.com mail-db9pr02cu00204.inbound.protection.outlook.com mail-am8pr83cu00106.inbound.protection.outlook.com mail-zrxpr07cu00102.inbound.protection.outlook.com mail-zrxpr05cu00105.inbound.protection.outlook.com mail-cpjpr05cu00207.inbound.protection.outlook.com mail-db9pr02cu00204.inbound.protection.outlook.com mail-db8pr02cu00101.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 78ms

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

📝 TXT Records#

4 records 150ms

TXT Record
5A46XSDZIQioXw+hvg1a8GimADJ6Vni5RfR4ePYqMkZtMOXn4G0uvo9tDMUZL1tmLbz7PrdLawZDiXxH4U0YJw==
Handelsskolen Silkeborg
MS=ms23585150
v=spf1 redirect=_spf.efif.dk

✉️ SPF#

Policy	Record (silkeborghs.dk)
redirect=_spf.efif.dk	v=spf1 redirect=_spf.efif.dk

📨 DMARC#

Policy	Record (_dmarc.silkeborghs.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#

latest probe, not this scan · checked 2026-10-18 13:18:45

www	178.251.4.118 (AS48854) (address records, no CNAME)
www vs bare domain	Same network silkeborghs.dk: 178.251.4.118 (AS48854) www.silkeborghs.dk: 178.251.4.118 (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-silkeborghs-dk._domainkey.efif.onmicrosoft.com	RSA · ~1024 bit below 2048 bit
selector2	selector2-silkeborghs-dk._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#

111ms

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

🏷️ SOA#

60ms

Field	Value
Serial	2012012449
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 09:28:15

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2009-01-15
Expires	2027-01-31 (103d)

🔗 Same registrant#

12 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)
handelsskolen-silkeborg.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)
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)
silkehs.dk	Punktum dk A/S (direct)

📋 WHOIS#

⏱️ Lookup Timing#

48ms

40ms

45ms

AAAA

37ms

TXT

150ms

CAA

48ms

HTTPS

49ms

TLSA

648ms

SOA

60ms

MTA-STS

56ms

DNSSEC

111ms

SRV

78ms

Total

1295ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-18 13:18:45	1357ms	3 NS 1 A 1 MX	🔒 Secure
2026-10-16 11:04:46	3031ms	3 NS 1 A 1 MX	🔒 Secure
2026-10-14 09:06:27	984ms	3 NS 1 A 1 MX	🔒 Secure
2026-10-08 23:13:47 shown	1295ms	3 NS 1 A 1 MX	🔒 Secure
2026-10-07 23:07:19	1544ms	3 NS 1 A 1 MX	🔒 Secure
2026-10-02 20:20:22	1139ms	3 NS 1 A 1 MX	🔒 Secure
2026-09-29 19:59:00	1307ms	3 NS 1 A 1 MX	🔒 Secure
2026-09-27 19:44:07	1079ms	3 NS 1 A 1 MX	🔒 Secure
2026-09-23 18:02:10	888ms	3 NS 1 A 1 MX	🔒 Secure
2026-09-17 00:10:56	3619ms	3 NS 1 A 1 MX	🔒 Secure
2026-09-09 22:59:26	1146ms	3 NS 1 A 1 MX	🔒 Secure
2026-08-30 17:03:52	2660ms	3 NS 1 A 1 MX	🔒 Secure
2026-08-26 18:23:37	899ms	3 NS 1 A 1 MX	🔒 Secure
2026-08-24 13:52:21	5724ms	3 NS 1 A 1 MX	🔒 Secure
2026-08-19 08:41:49	5365ms	3 NS 1 A 1 MX	🔒 Secure
2026-08-18 08:40:04	18140ms	3 NS 1 A 1 MX	🔒 Secure
2026-08-13 07:10:38	3144ms	3 NS 1 A 1 MX	🔒 Secure
2026-08-10 16:45:58	5187ms	3 NS 1 A 1 MX	🔒 Secure
2026-08-07 16:43:12	1206ms	3 NS 1 A 1 MX	🔒 Secure
2026-08-02 17:44:30	3392ms	3 NS 1 A 1 MX	🔒 Secure
2026-07-27 04:15:44	3278ms	3 NS 1 A 1 MX	🔒 Secure
2026-07-24 03:08:09	5601ms	3 NS 1 A 1 MX	🔒 Secure
2026-07-22 00:53:39	4220ms	3 NS 1 A 1 MX	🔒 Secure
2026-07-15 17:28:39	2334ms	3 NS 1 A 1 MX	🔒 Secure
2026-07-10 04:12:03	3936ms	3 NS 1 A 1 MX	🔒 Secure