rb-mail.dk

Records from scan: 2026-09-24 09:31:02 · 12489ms total · last checked 2026-10-16 10:19 (unchanged)

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

rb-mail.dk is a .dk domain served by 2 nameservers (ns1.jth.net, ns4.jth.net). It was registered on 1 May 2019 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 212.237.178.27 is hosted by EWII Bredbaand A/S (AS204151) in Denmark. Mail is handled by mail.jth.net, mail6.jth.net. The zone is not DNSSEC-signed, publishes a 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 31ms

Nameserver	IP addresses	PTR	ASN / ISP
ns1.jth.net	212.237.178.27 2a06:4005:8003::2	ns1.jth.net ns1.jth.net	AS204151 EWII Bredbaand A/S AS204151 EWII Bredbaand A/S
ns4.jth.net	2a06:4004:b026::1 87.104.241.106	jylland.jth.net jylland.jth.net	AS204151 EWII Bredbaand A/S AS204151 EWII Bredbaand A/S

🌍 A Records#

1 records 42ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
212.237.178.27	300s	27.27-32.178.237.212.in-addr.arpa antennelauget-vk.dk domname.eu domregistry.eu jth.net kirsebaerhaven4000.dk mail.jth.net ns1.jth.net rb-mail.dk smsnu.dk	AS204151	EWII Bredbaand A/S	212.237.176.0/21	🇩🇰 Denmark	Frederikssund

📧 MX Records#

2 records 40ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	86400s	mail.jth.net	212.237.178.27 212.237.178.27 212.237.178.27 212.237.178.27 212.237.178.27 212.237.178.27 212.237.178.27 212.237.178.27 212.237.178.27 212.237.178.27 2a06:4005:8003::2	27.27-32.178.237.212.in-addr.arpa smsnu.dk domname.eu rb-mail.dk kirsebaerhaven4000.dk antennelauget-vk.dk jth.net domregistry.eu ns1.jth.net mail.jth.net —	AS204151 EWII Bredbaand A/S AS204151 EWII Bredbaand A/S AS204151 EWII Bredbaand A/S AS204151 EWII Bredbaand A/S AS204151 EWII Bredbaand A/S AS204151 EWII Bredbaand A/S AS204151 EWII Bredbaand A/S AS204151 EWII Bredbaand A/S AS204151 EWII Bredbaand A/S AS204151 EWII Bredbaand A/S AS204151 EWII Bredbaand A/S
11	86400s	mail6.jth.net	2a06:4005:8003::2	—	AS204151 EWII Bredbaand A/S

📧 Autodiscover / Autoconfig#

Service	CNAME / IP
🔷 Autodiscover	212.237.178.27
🔶 Autoconfig	212.237.178.27

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

1 records 1729ms

TXT Record
v=spf1 mx a ip4:185.107.14.0/24 ip4:212.112.154.133 ~all

✉️ SPF#

Policy	Record (rb-mail.dk)
~all (soft fail)	v=spf1 mx a ip4:185.107.14.0/24 ip4:212.112.154.133 ~all

📨 DMARC#

Policy	Record (_dmarc.rb-mail.dk)
p=quarantine	v=DMARC1; p=quarantine;pct=100; ri=86400

📬 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 13:23:51

www	212.237.178.27 (AS204151) (address records, no CNAME)
www vs bare domain	Same network rb-mail.dk: 212.237.178.27 (AS204151) www.rb-mail.dk: 212.237.178.27 (AS204151)
Wildcard	Yes: any name under the zone resolves

🔎 SPF check#

zone-wide SPF report

DNS lookups: 2/10 · policy: ~all

No problems found

🔗 TLSA / DANE#

1 records 4083ms

Service / Owner	Type	Cert association
SMTP _25._tcp.mail6.jth.net	DANE-EE · SPKI · SHA-256	3D47D6201D951BB28EA8D9E0DE8FB2E9…

🔐 DNSSEC#

82ms

Check	Result
Validation Status	🔓 Insecure
AD Flag (resolver validates)	✗ Not set
DS Record	✗ Not found
DNSKEY Record	✗ Not found
Flags	unsigned answer

🏷️ SOA#

0ms

Field	Value
Serial	2019050118
Primary NS (MNAME)	ns1.jth.net
Responsible (RNAME)	hostmaster@jth.net
Refresh	86400s
Retry	3600s
Expire	2419200s
Minimum (neg-cache TTL)	1s

📋 Registration#

WHOIS fetched 2026-10-15 16:59:38

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2019-05-01
Expires	2027-05-31 (226d)

📋 WHOIS#

⏱️ Lookup Timing#

31ms

42ms

40ms

AAAA

40ms

TXT

1729ms

CAA

56ms

HTTPS

44ms

TLSA

4083ms

SOA

0ms

MTA-STS

64ms

DNSSEC

82ms

SRV

4047ms

Total

12489ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-09-24 09:31:02 shown	12489ms	2 NS 1 A 2 MX	🔓 Insecure
2026-08-27 20:44:24	9859ms	2 NS 1 A 2 MX	🔓 Insecure
2026-07-03 00:40:19	2791ms	2 NS 1 A 2 MX	🔓 Insecure
2026-06-23 11:33:53	1205ms	2 NS 1 A 2 MX	🔓 Insecure
2026-06-22 18:38:46	3410ms	2 NS 1 A 2 MX	❓ Unknown
2026-06-22 05:19:19	1171ms	0 NS 0 A 0 MX	❓ Unknown
2026-06-21 01:58:54	1146ms	2 NS 1 A 2 MX	🔓 Insecure
2026-06-18 08:28:40	5180ms	2 NS 1 A 2 MX	🔓 Insecure