rbbu.dk

📜 Historical scan 2026-06-17 13:52:24 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

rbbu.dk is a .dk domain served by 3 nameservers (ns5.chosting.dk, ns6.chosting.dk, ns7.chosting.dk). It was already in the .dk zone when our tracking began on 16 June 2026. Its website address 178.20.216.113 is hosted by Atea A/S (AS21060) in Denmark. Mail is handled by rbbu.dk. The zone is DNSSEC-signed but currently fails validation, publishes a DMARC policy and is reachable over IPv6. 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#

3 records 80ms

Nameserver	IP addresses	PTR	ASN / ISP
ns5.chosting.dk	167.235.66.236 2a01:4f8:1c1e:d097::1	ns5.chosting.dk ns5.chosting.dk	AS24940 Hetzner Online GmbH AS24940 Hetzner Online GmbH
ns6.chosting.dk	2001:41d0:305:2100::80e9 51.91.57.33	ns6.chosting.dk ns6.chosting.dk	AS16276 OVH SAS AS16276 OVH SAS
ns7.chosting.dk	178.20.220.33	ns7.chosting.dk	AS21060 Atea A/S

🌍 A Records#

1 records 52ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
178.20.216.113	—	server13.chosting.dk	AS21060	Atea A/S	178.20.216.0/23	🇩🇰 Denmark	—

📧 MX Records#

1 records 49ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	—	rbbu.dk	178.20.216.113 2a01:7cc0:101:ffff::1:11	server13.chosting.dk —	AS21060 Atea A/S AS21060 Atea A/S

🔷 AAAA Records (IPv6)#

1 records 56ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2a01:7cc0:101:ffff::1:11	—	—	AS21060	Atea A/S	2a01:7cc0:100:0:0:0:0:0/40	🇩🇰 Denmark	—

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

1 records 241ms

TXT Record
v=spf1 ip4:178.20.216.113 include:spf.chosting.dk ip4:178.20.216.114 +a +mx ~all

✉️ SPF#

Policy	Record (rbbu.dk)
~all (soft fail)	v=spf1 ip4:178.20.216.113 include:spf.chosting.dk ip4:178.20.216.114 +a +mx ~all

📨 DMARC#

Policy	Record (_dmarc.rbbu.dk)
p=none (monitor only)	v=DMARC1; p=none;

📬 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 2026-10-08 03:30:47

www CNAME	rbbu.dk (all on rbbu.dk) → 178.20.216.113 2a01:7cc0:101:ffff::1:11 (AS21060)
www vs bare domain	Same network rbbu.dk: 178.20.216.113 2a01:7cc0:101:ffff::1:11 (AS21060) www.rbbu.dk: 178.20.216.113 2a01:7cc0:101:ffff::1:11 (AS21060)
Wildcard	No

✍️ DKIM keys#

1 found

Selector	CNAME	Key
default	—	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: 5/10 · policy: ~all

No problems found

🔗 TLSA / DANE#

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

🔐 DNSSEC#

154ms

Check	Result
Validation Status	⚠️ Bogus
AD Flag (resolver validates)	✗ Not set
DS Record	✗ Not found
DNSKEY Record	✗ Not found
Flags	broken trust chain resolving 'rbbu.dk/A/IN': 127.0.0.1#53

🏷️ SOA#

77ms

Field	Value
Serial	2026052600
Primary NS (MNAME)	ns5.chosting.dk
Responsible (RNAME)	logs@chosting.dk
Refresh	3600s
Retry	1800s
Expire	1209600s
Minimum (neg-cache TTL)	86400s

📋 Registration#

✗ No registration data yet — queued for a WHOIS lookup

📋 WHOIS#

⏱️ Lookup Timing#

80ms

52ms

49ms

AAAA

56ms

TXT

241ms

CAA

78ms

HTTPS

50ms

TLSA

158ms

SOA

77ms

MTA-STS

68ms

DNSSEC

154ms

SRV

0ms

Total

1545ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-09-26 01:32:39	9601ms	3 NS 1 A 1 MX	🔓 Insecure
2026-09-14 14:20:21	793ms	3 NS 1 A 1 MX	🔓 Insecure
2026-08-28 11:22:46	945ms	3 NS 1 A 1 MX	🔓 Insecure
2026-07-12 14:58:13	2837ms	3 NS 1 A 1 MX	🔓 Insecure
2026-06-28 14:06:32	1338ms	3 NS 1 A 1 MX	🔓 Insecure
2026-06-23 13:57:39	752ms	3 NS 1 A 1 MX	🔓 Insecure
2026-06-17 13:52:24 shown	1545ms	3 NS 1 A 1 MX	⚠️ Bogus