kursuscentret.dk DNS records

🖥️ Nameservers2 records 29ms

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 Records1 records 26ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
185.19.134.87	3600s	businessepx.dk campussoenderborg.dk campussonderborg.dk detgroennegymnasium.dk epxsoenderborg.dk epxsonderborg.dk lup.bcsyd.dk teambuilldingsyd.dk xn--campussnderborg-cub.dk xn--detgrnnegymnasium-40b.dk xn--epxsnderborg-yjb.dk	AS199374	Syddansk Erhvervsskole Odense-Vejle	185.19.132.0/22	🇩🇰 Denmark	Odense

📧 MX Records1 records 33ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
100	3600s	mxnonexistent.kursuscentret.dk	185.19.134.87 185.19.134.87 185.19.134.87 185.19.134.87 185.19.134.87 185.19.134.87 185.19.134.87 185.19.134.87 185.19.134.87 185.19.134.87 185.19.134.87	detgroennegymnasium.dk xn--detgrnnegymnasium-40b.dk campussoenderborg.dk campussonderborg.dk businessepx.dk epxsoenderborg.dk epxsonderborg.dk teambuilldingsyd.dk xn--epxsnderborg-yjb.dk xn--campussnderborg-cub.dk lup.bcsyd.dk	AS199374 Syddansk Erhvervsskole Odense-Vejle AS199374 Syddansk Erhvervsskole Odense-Vejle AS199374 Syddansk Erhvervsskole Odense-Vejle AS199374 Syddansk Erhvervsskole Odense-Vejle AS199374 Syddansk Erhvervsskole Odense-Vejle AS199374 Syddansk Erhvervsskole Odense-Vejle AS199374 Syddansk Erhvervsskole Odense-Vejle AS199374 Syddansk Erhvervsskole Odense-Vejle AS199374 Syddansk Erhvervsskole Odense-Vejle AS199374 Syddansk Erhvervsskole Odense-Vejle AS199374 Syddansk Erhvervsskole Odense-Vejle

📧 Autodiscover / Autoconfig

Service	CNAME / IP
🔷 Autodiscover	185.19.134.87
🔶 Autoconfig	185.19.134.87

🔷 AAAA Records (IPv6)

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records1 records 142ms

TXT Record
v=spf1 -all

✉️ SPF

Policy	Record (kursuscentret.dk)
-all (hard fail)	v=spf1 -all

📨 DMARC

Policy	Record (_dmarc.kursuscentret.dk)
p=reject	v=DMARC1; p=reject; sp=reject; adkim=r; aspf=r

📬 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

🔗 TLSA / DANE

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

🔐 DNSSEC97ms

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

🏷️ SOA0ms

Field	Value
Serial	2020051792
Primary NS (MNAME)	ns1.esis.dk
Responsible (RNAME)	hostmaster
Refresh	900s
Retry	600s
Expire	86400s
Minimum (neg-cache TTL)	3600s

📋 Registration

✗ No registration data — collected automatically when SOA serial changes

📋 WHOIS

⏱️ Lookup Timing

NS

29ms

A

26ms

MX

33ms

AAAA

35ms

TXT

142ms

CAA

23ms

HTTPS

27ms

TLSA

106ms

SOA

0ms

MTA-STS

42ms

DNSSEC

97ms

SRV

50ms

Total

2783ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-30 05:15:47	2783ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-08-27 00:18:01	792ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-08-26 06:13:12	968ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-08-23 19:27:30	1137ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-08-18 14:55:52	695ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-08-12 07:14:28	1435ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-08-10 13:39:50	2654ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-08-08 04:59:31	671ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-08-01 11:28:07	8924ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-07-26 15:42:07	2573ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-07-23 14:09:29	8684ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-07-21 14:29:23	16528ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-07-15 20:02:05	2972ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-07-10 12:59:46	3013ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-07-08 14:01:11	1271ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-07-04 15:05:24	5295ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-29 03:24:58	665ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-22 12:43:49	14653ms	0 NS 0 A 0 MX	⚠️ Bogus	View
2026-06-22 05:38:40	700ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-22 03:36:51	10413ms	0 NS 0 A 0 MX	⚠️ Bogus	View
2026-06-18 19:54:03	14680ms	0 NS 0 A 0 MX	⚠️ Bogus	View
2026-06-17 21:46:02	10004ms	2 NS 1 A 1 MX	🔒 Secure	View