mester-tj.dk

Records from scan: 2026-10-08 15:25:04 · 363ms total · last checked 2026-10-16 10:40 (unchanged)

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

mester-tj.dk is a .dk domain served by 2 nameservers (ns1.curanet.dk, ns2.curanet.dk). It was already in the .dk zone when our tracking began on 16 June 2026. Its website address 185.21.40.221 is hosted by team.blue Denmark A/S (AS48854) in Denmark. Mail is handled by mx1.onlinemail.io, mx2.onlinemail.io. The zone is DNSSEC-signed and validates, has no 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#

2 records 35ms

Nameserver	IP addresses	PTR	ASN / ISP
ns1.curanet.dk	185.25.141.12 2a02:2339:4006:108::123	ns1.curanet.dk ns1.curanet.dk	AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S
ns2.curanet.dk	2a02:2339:1:10f::123:123 91.197.248.75	ns2.curanet.dk ns2.curanet.dk	AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S

🌍 A Records#

1 records 36ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
185.21.40.221	3600s	vm1212.enterprisecloud.nu	AS48854	team.blue Denmark A/S	185.21.40.0/22	🇩🇰 Denmark	—

📧 MX Records#

2 records 30ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	3600s	mx1.onlinemail.io	185.21.42.12	mx1.onlinemail.io	AS48854 team.blue Denmark A/S
20	3600s	mx2.onlinemail.io	46.36.208.16	mx2.onlinemail.io	AS48854 team.blue Denmark A/S

📧 Autodiscover / Autoconfig#

Service	CNAME / IP
🔷 Autodiscover	autodiscover-mf.onlinemail.io → 185.21.40.62
🔶 Autoconfig	autoconfig-mf.onlinemail.io → 185.21.40.62

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

1 records 118ms

TXT Record
v=spf1 a mx include:spf.curanet.dk ip4:31.187.85.70 include:web.shared.mysmtp.com ~all

✉️ SPF#

Policy	Record (mester-tj.dk)
~all (soft fail)	v=spf1 a mx include:spf.curanet.dk ip4:31.187.85.70 include:web.shared.mysmtp.com ~all

📨 DMARC#

✗ No DMARC record — mail spoofing not restricted

📬 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 2026-10-08 15:25:04

www	185.21.40.221 (AS48854) (address records, no CNAME)
www vs bare domain	Same network mester-tj.dk: 185.21.40.221 (AS48854) www.mester-tj.dk: 185.21.40.221 (AS48854)
Wildcard	No
Denial of existence	NSEC3 · 1 iteration · 1-byte salt RFC 9276 recommends 0 iterations and no salt
CDS / CDNSKEY	None 0 CDS, 0 CDNSKEY

🔎 SPF check#

zone-wide SPF report

DNS lookups: 9/10 · policy: ~all

warn 9 of the 10 allowed DNS lookups used: one more include can break SPF

🔗 TLSA / DANE#

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

🔐 DNSSEC#

55ms

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

🏷️ SOA#

19ms

Field	Value
Serial	2023061501
Primary NS (MNAME)	ns1.curanet.dk
Responsible (RNAME)	hostmaster@curanet.dk
Refresh	14400s
Retry	3600s
Expire	1209600s
Minimum (neg-cache TTL)	300s

📋 Registration#

✗ No registration data yet — queued for a WHOIS lookup

📋 WHOIS#

⏱️ Lookup Timing#

35ms

36ms

30ms

AAAA

38ms

TXT

118ms

CAA

47ms

HTTPS

41ms

TLSA

54ms

SOA

19ms

MTA-STS

35ms

DNSSEC

55ms

SRV

44ms

Total

363ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-08 15:25:04 shown	363ms	2 NS 1 A 2 MX	🔒 Secure
2026-08-27 03:38:03	624ms	2 NS 1 A 2 MX	🔒 Secure
2026-06-27 14:08:28	1010ms	2 NS 1 A 2 MX	🔒 Secure
2026-06-26 16:27:02	561ms	2 NS 1 A 2 MX	🔒 Secure
2026-06-23 15:03:56	992ms	2 NS 1 A 2 MX	🔒 Secure
2026-06-22 14:19:12	1186ms	0 NS 0 A 0 MX	❓ Unknown
2026-06-18 06:55:31	777ms	2 NS 1 A 2 MX	🔒 Secure