rbf.dk

📜 Historical scan 2026-06-17 19:42:40 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

rbf.dk is a .dk domain served by 2 nameservers (jay.ns.cloudflare.com, uma.ns.cloudflare.com). It was registered on 18 April 1996 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.93.184 is hosted by Cloudflare, Inc. (AS13335). The zone is not DNSSEC-signed, 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#

2 records 74ms

Nameserver	IP addresses	PTR	ASN / ISP
jay.ns.cloudflare.com	108.162.193.123 172.64.33.123 173.245.59.123 2606:4700:58::adf5:3b7b 2803:f800:50::6ca2:c17b 2a06:98c1:50::ac40:217b	jay.ns.cloudflare.com jay.ns.cloudflare.com jay.ns.cloudflare.com jay.ns.cloudflare.com jay.ns.cloudflare.com jay.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
uma.ns.cloudflare.com	108.162.192.146 172.64.32.146 173.245.58.146 2606:4700:50::adf5:3a92 2803:f800:50::6ca2:c092 2a06:98c1:50::ac40:2092	uma.ns.cloudflare.com uma.ns.cloudflare.com uma.ns.cloudflare.com uma.ns.cloudflare.com uma.ns.cloudflare.com uma.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.

🌍 A Records#

2 records 74ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.21.93.184	—	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.213.182	—	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records#

📧

No MX records found

🔷 AAAA Records (IPv6)#

2 records 75ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3033::ac43:d5b6	—	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3034::6815:5db8	—	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records#

1 records 71ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.93.184,172.67.213.182 ech=AEX+DQBBLQAgACCrQdpb2a3PDJIlRena30f6iXhyGTgVnWbVR/N7meI8EgAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3033::ac43:d5b6,2606:4700:3034::6815:5db8

📝 TXT Records#

1 records 305ms

TXT Record
v=spf1 -all

✉️ SPF#

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

📨 DMARC#

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

📬 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 2026-10-21 21:58:22

www	104.21.93.184 172.67.213.182 2606:4700:3031::ac43:d5b6 2606:4700:3033::6815:5db8 (AS13335) (address records, no CNAME)
www vs bare domain	Same network rbf.dk: 104.21.93.184 172.67.213.182 2606:4700:3031::ac43:d5b6 2606:4700:3033::6815:5db8 (AS13335) www.rbf.dk: 104.21.93.184 172.67.213.182 2606:4700:3031::ac43:d5b6 2606:4700:3033::6815:5db8 (AS13335)
Wildcard	No

🔎 SPF check#

zone-wide SPF report

DNS lookups: 0/10 · policy: -all

No problems found

🔗 TLSA / DANE#

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

🔐 DNSSEC#

192ms

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

🏷️ SOA#

70ms

Field	Value
Serial	2406385610
Primary NS (MNAME)	jay.ns.cloudflare.com
Responsible (RNAME)	dns@cloudflare.com
Refresh	10000s
Retry	2400s
Expire	604800s
Minimum (neg-cache TTL)	1800s

📋 Registration#

WHOIS fetched 2026-10-04 22:39:50

Field	Value
Registrar	Simply.com A/S
Registered	1996-04-18
Expires	2027-06-30 (251d)

📋 WHOIS#

⏱️ Lookup Timing#

74ms

73ms

AAAA

75ms

TXT

305ms

CAA

71ms

HTTPS

71ms

TLSA

87ms

SOA

70ms

MTA-STS

43ms

DNSSEC

192ms

SRV

72ms

Total

790ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-21 21:58:22	490ms	2 NS 2 A 0 MX	🔓 Insecure
2026-10-04 22:21:30	591ms	2 NS 2 A 0 MX	🔓 Insecure
2026-09-19 21:39:39	1827ms	2 NS 2 A 0 MX	🔓 Insecure
2026-08-07 01:14:41	9797ms	2 NS 2 A 0 MX	🔓 Insecure
2026-07-18 13:39:13	778ms	2 NS 2 A 0 MX	🔓 Insecure
2026-06-22 04:25:59	4526ms	2 NS 2 A 0 MX	🔓 Insecure
2026-06-21 09:24:25	1160ms	0 NS 0 A 0 MX	❓ Unknown
2026-06-20 15:02:06	916ms	0 NS 0 A 0 MX	❓ Unknown
2026-06-19 17:41:01	776ms	2 NS 2 A 0 MX	🔓 Insecure
2026-06-17 19:42:40 shown	790ms	2 NS 2 A 0 MX	🔓 Insecure