thebluecollege.dk DNS records

🖥️ Nameservers2 records 44ms

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 48ms

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 46ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
100	3600s	mxnonexistent.thebluecollege.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 epxsoenderborg.dk epxsonderborg.dk teambuilldingsyd.dk xn--epxsnderborg-yjb.dk xn--campussnderborg-cub.dk lup.bcsyd.dk campussoenderborg.dk campussonderborg.dk businessepx.dk xn--detgrnnegymnasium-40b.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 203ms

TXT Record
v=spf1 -all

✉️ SPF

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

📨 DMARC

Policy	Record (_dmarc.thebluecollege.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)

🔐 DNSSEC103ms

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

🏷️ SOA0ms

Field	Value
Serial	2020051787
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

44ms

A

48ms

MX

46ms

AAAA

46ms

TXT

203ms

CAA

55ms

HTTPS

42ms

TLSA

75ms

SOA

0ms

MTA-STS

91ms

DNSSEC

103ms

SRV

84ms

Total

622ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-09-01 14:34:16	622ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-08-31 18:02:47	1790ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-08-30 09:05:52	601ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-08-27 01:47:43	628ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-08-22 16:15:08	1217ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-08-20 16:00:57	3622ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-08-15 14:19:26	2718ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-08-12 21:13:30	8671ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-08-10 12:53:12	8956ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-08-06 06:13:41	873ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-08-01 22:00:34	1010ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-07-27 17:41:58	2567ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-07-23 15:36:44	3810ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-07-18 21:06:23	1450ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-07-13 09:46:40	2499ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-07-11 21:42:17	837ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-07-07 17:25:48	901ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-07-01 17:53:03	963ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-30 14:25:36	503ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-29 17:30:58	566ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-26 03:19:39	496ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-22 16:12:25	4500ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-20 09:19:15	4460ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-18 03:29:00	3854ms	2 NS 1 A 1 MX	🔒 Secure	View