sdbf.dk

📜 Historical scan 2026-10-15 10:38:35 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

sdbf.dk is a .dk domain served by 2 nameservers (ns1.esis.dk, ns2.esis.dk). It was registered on 15 June 2012 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 185.19.134.34 is hosted by Syddansk Erhvervsskole Odense-Vejle (AS199374) in Denmark. Mail is handled by sdbf-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#

2 records 159ms

Nameserver	IP addresses	PTR	ASN / ISP
ns1.esis.dk	185.19.134.2	ns1.esis.dk	AS199374 Syddansk Erhvervsskole Odense-Vejle
ns2.esis.dk	185.19.134.3	ns2.esis.dk	AS199374 Syddansk Erhvervsskole Odense-Vejle

🌍 A Records#

1 records 154ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
185.19.134.34	3600s	—	AS199374	Syddansk Erhvervsskole Odense-Vejle	185.19.132.0/22	🇩🇰 Denmark	Odense

📧 MX Records#

1 records 170ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	300s	sdbf-dk.mail.protection.outlook.com	2a01:111:f403:ca04::4 2a01:111:f403:ca09::24 2a01:111:f403:ca21::8 2a01:111:f403:ca48::a 52.101.103.39 52.101.68.10 52.101.68.25 52.101.73.126	mail-db4pr02cu00204.inbound.protection.outlook.com mail-am6pr02cu00204.inbound.protection.outlook.com mail-matpr04cu00100.inbound.protection.outlook.com mail-miypr02cu00202.inbound.protection.outlook.com mail-miypr05cu00207.inbound.protection.outlook.com mail-dbbpr03cu00102.inbound.protection.outlook.com mail-db8pr02cu00101.inbound.protection.outlook.com mail-am8pr83cu00106.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

📧 Autodiscover / Autoconfig#

Service	CNAME / IP
🔷 Autodiscover	185.19.134.34
🔶 Autoconfig	185.19.134.34

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

🔌 SRV Records#

1 records 194ms

Service	Priority	Weight	Port	Target
_autodiscover._tcp	0	0	443	mail.esis.dk

📝 TXT Records#

7 records 399ms

TXT Record
_globalsign-domain-verification=khwKhBs3zWFzYlT-HMOiGs_pIXPMXr146MMp_ZlGHJ
_globalsign-domain-verification=P5KNadZ1QqmxC3TJAtjJNZPrXs-jA5pVCJ075HvLWJ
_globalsign-domain-verification=r4G-KmupLwLNb62jJHcBcCe560dGIR6uVhXcYJkBcT
_globalsign-domain-verification=Wx2m9pCpTyDcSxTQc4tcqRvq3QLvC9d8TDY9kzzgCJ
_globalsign-domain-verification=ynDGlmZf71LiyXazE7enHUsRmq43IpPW1r-_b4PSxl
uvmid=461401
v=spf1 ip4:185.19.134.5 include:spf.esis.dk -all

✉️ SPF#

Policy	Record (sdbf.dk)
-all (hard fail)	v=spf1 ip4:185.19.134.5 include:spf.esis.dk -all

📨 DMARC#

Policy	Record (_dmarc.sdbf.dk)
p=reject	v=DMARC1;p=reject;sp=reject;rua=mailto:be7762a8bd@rua.easydmarc.eu;ruf=mailto:be7762a8bd@ruf.easydmarc.eu;fo=1

📬 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 2026-10-20 17:33:11

www	185.19.134.34 (AS199374) (address records, no CNAME)
www vs bare domain	Same network sdbf.dk: 185.19.134.34 (AS199374) www.sdbf.dk: 185.19.134.34 (AS199374)
Wildcard	Yes: any name under the zone resolves
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-sdbf-dk._domainkey.syddanskerhvervsskole2.onmicrosoft.com	RSA · ~1024 bit below 2048 bit
selector2	selector2-sdbf-dk._domainkey.syddanskerhvervsskole2.onmicrosoft.com	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#

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

🔐 DNSSEC#

270ms

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

🏷️ SOA#

129ms

Field	Value
Serial	2020051964
Primary NS (MNAME)	ns1.esis.dk
Responsible (RNAME)	hostmaster
Refresh	900s
Retry	600s
Expire	86400s
Minimum (neg-cache TTL)	3600s

📋 Registration#

WHOIS fetched 2026-10-20 17:54:35

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2012-06-15
Expires	2035-06-30 (3173d)

🔗 Same registrant#

32 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
10grindsted.dk	Punktum dk A/S (direct)
10odense.dk	Punktum dk A/S (direct)
10vejle.dk	Punktum dk A/S (direct)
auskurser.dk	Punktum dk A/S (direct)
cityofeducatia.dk	Punktum dk A/S (direct)
cvkweb.dk	Punktum dk A/S (direct)
eali.dk	Punktum dk A/S (direct)
educatia.dk	Punktum dk A/S (direct)
esev.dk	Punktum dk A/S (direct)
esis.dk	Punktum dk A/S (direct)
htxvejle.dk	Punktum dk A/S (direct)
itsvejle.dk	ESIS-center
l-auskurser.dk	Punktum dk A/S (direct)
lauskurser.dk	Punktum dk A/S (direct)
otg.dk	Punktum dk A/S (direct)
ots.dk	Punktum dk A/S (direct)
sde-tv.dk	ESIS-center
sde.dk	Punktum dk A/S (direct)
sdegr10.dk	Punktum dk A/S (direct)
sdegr2.dk	Punktum dk A/S (direct)
sdegr3.dk	Punktum dk A/S (direct)
sdegr4.dk	Punktum dk A/S (direct)
sdegr8.dk	Punktum dk A/S (direct)
sdegr9.dk	Punktum dk A/S (direct)
stabs.dk	Punktum dk A/S (direct)
tegsolution.dk	Punktum dk A/S (direct)
transportuddannelsescenter-fyn.dk	Punktum dk A/S (direct)
transportuddannelsescenter.dk	Punktum dk A/S (direct)
tsev.dk	Punktum dk A/S (direct)
vejlets.dk	Punktum dk A/S (direct)
vtg.dk	Punktum dk A/S (direct)
vucrk.dk	Punktum dk A/S (direct)

📋 WHOIS#

⏱️ Lookup Timing#

159ms

154ms

170ms

AAAA

181ms

TXT

399ms

CAA

159ms

HTTPS

162ms

TLSA

954ms

SOA

129ms

MTA-STS

205ms

DNSSEC

270ms

SRV

194ms

Total

2215ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-20 17:33:11	608ms	2 NS 1 A 1 MX	🔒 Secure
2026-10-19 15:19:52	1191ms	2 NS 1 A 1 MX	🔒 Secure
2026-10-17 14:38:19	1437ms	2 NS 1 A 1 MX	🔒 Secure
2026-10-15 10:38:35 shown	2215ms	2 NS 1 A 1 MX	🔒 Secure
2026-10-14 10:32:07	4893ms	2 NS 1 A 1 MX	🔒 Secure
2026-10-13 06:52:42	1089ms	2 NS 1 A 1 MX	🔒 Secure
2026-10-12 06:51:10	1140ms	2 NS 1 A 1 MX	🔒 Secure
2026-10-09 02:41:14	3867ms	2 NS 1 A 1 MX	🔒 Secure
2026-10-08 02:24:21	3111ms	2 NS 1 A 1 MX	🔒 Secure
2026-10-07 02:14:50	1193ms	2 NS 1 A 1 MX	🔒 Secure
2026-10-04 22:20:15	1310ms	2 NS 1 A 1 MX	🔒 Secure
2026-10-02 22:13:27	1334ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-30 21:58:56	1438ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-28 21:39:42	974ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-26 21:21:40	662ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-26 19:06:29	8208ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-24 18:25:15	803ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-23 17:57:52	1076ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-18 20:21:54	1053ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-11 18:32:28	1006ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-08 03:38:33	3743ms	2 NS 1 A 1 MX	🔒 Secure
2026-08-30 11:42:25	898ms	2 NS 1 A 1 MX	🔒 Secure
2026-08-28 05:12:36	892ms	2 NS 1 A 1 MX	🔒 Secure
2026-08-26 04:00:09	1440ms	2 NS 1 A 1 MX	🔒 Secure
2026-08-25 14:24:32	2785ms	2 NS 1 A 1 MX	🔒 Secure