rfbb.dk

Records from scan: 2026-09-30 13:17:55 · 1302ms total · last checked 2026-10-17 20:02 (unchanged)

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

rfbb.dk is a .dk domain served by 2 nameservers (hugh.ns.cloudflare.com, lauryn.ns.cloudflare.com). It was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.19.240.93 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by rfbb-dk.mail.protection.outlook.com. 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 59ms

Nameserver	IP addresses	PTR	ASN / ISP
hugh.ns.cloudflare.com	108.162.193.117 172.64.33.117 173.245.59.117 2606:4700:58::adf5:3b75 2803:f800:50::6ca2:c175 2a06:98c1:50::ac40:2175	hugh.ns.cloudflare.com hugh.ns.cloudflare.com hugh.ns.cloudflare.com hugh.ns.cloudflare.com hugh.ns.cloudflare.com hugh.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
lauryn.ns.cloudflare.com	108.162.194.22 162.159.38.22 172.64.34.22 2606:4700:50::a29f:2616 2803:f800:50::6ca2:c216 2a06:98c1:50::ac40:2216	lauryn.ns.cloudflare.com lauryn.ns.cloudflare.com lauryn.ns.cloudflare.com lauryn.ns.cloudflare.com lauryn.ns.cloudflare.com lauryn.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 46ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.19.240.93	300s	—	AS13335	Cloudflare, Inc.	104.16.0.0/14	—	—
104.19.241.93	300s	—	AS13335	Cloudflare, Inc.	104.16.0.0/14	—	—

📧 MX Records#

1 records 47ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	300s	rfbb-dk.mail.protection.outlook.com	2a01:111:f403:ca09::a 2a01:111:f403:ca21::10 2a01:111:f403:ca21::8 2a01:111:f403:ca38::8 52.101.185.21 52.101.68.29 52.101.73.155 52.101.91.21	mail-am7pr02cu00202.inbound.protection.outlook.com mail-matpr05cu00100.inbound.protection.outlook.com mail-matpr04cu00100.inbound.protection.outlook.com mail-wa4pr04cu00100.inbound.protection.outlook.com mail-zrxpr05cu00105.inbound.protection.outlook.com mail-dbapr03cu00105.inbound.protection.outlook.com mail-am7pr02cu00203.inbound.protection.outlook.com mail-matpr05cu00105.inbound.protection.outlook.com	AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation

📧 Autodiscover / Autoconfig#

Service	CNAME / IP
🔷 Autodiscover	autodiscover.outlook.com → 40.104.116.40

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

6 records 229ms

TXT Record
brevo-code:1b8076912f22260904cc12607af6ac04
google-site-verification=3XyiVcz3PSxGXh90snzilrwIaTwbBVlU4ItpBh5S6MQ
google-site-verification=wEwbyV4vKMFB_eNK_ubQ3FY-wJUruRAoirNOJpoWk20
lime-domain-verification=D8ADBD73D7DA200
MS=ms14342904
v=spf1 include:spf.protection.outlook.com include:sendgrid.net -all

✉️ SPF#

Policy	Record (rfbb.dk)
-all (hard fail)	v=spf1 include:spf.protection.outlook.com include:sendgrid.net -all

📨 DMARC#

Policy	Record (_dmarc.rfbb.dk)
p=none (monitor only)	v=DMARC1; p=none; rua=mailto:84cd4ddfaf5543a3bec9a5a696c24560@dmarc-reports.cloudflare.net

📬 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 2026-10-07 17:13:00

www	104.19.240.93 104.19.241.93 (AS13335) (address records, no CNAME)
www vs bare domain	Same network rfbb.dk: 104.19.240.93 104.19.241.93 (AS13335) www.rfbb.dk: 104.19.240.93 104.19.241.93 (AS13335)
Wildcard	No

✍️ DKIM keys#

3 found

Selector	CNAME	Key
s1	s1.domainkey.u25879343.wl094.sendgrid.net	RSA · ~2048 bit
s2	s2.domainkey.u25879343.wl094.sendgrid.net	RSA · ~2048 bit
selector1	selector1-rfbb-dk._domainkey.tdch1019231.onmicrosoft.com	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: 3/10 · policy: -all

No problems found

🔗 TLSA / DANE#

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

🔐 DNSSEC#

99ms

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

🏷️ SOA#

35ms

Field	Value
Serial	2415532322
Primary NS (MNAME)	hugh.ns.cloudflare.com
Responsible (RNAME)	dns@cloudflare.com
Refresh	10000s
Retry	2400s
Expire	604800s
Minimum (neg-cache TTL)	1800s

📋 Registration#

✗ No registration data yet — queued for a WHOIS lookup

📋 WHOIS#

⏱️ Lookup Timing#

59ms

46ms

47ms

AAAA

32ms

TXT

229ms

CAA

56ms

HTTPS

35ms

TLSA

586ms

SOA

35ms

MTA-STS

101ms

DNSSEC

99ms

SRV

79ms

Total

1302ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-09-30 13:17:55 shown	1302ms	2 NS 2 A 1 MX	🔓 Insecure
2026-09-23 14:00:59	1082ms	2 NS 2 A 1 MX	🔓 Insecure
2026-09-18 22:02:58	1800ms	2 NS 2 A 1 MX	🔓 Insecure
2026-09-14 17:46:53	2515ms	2 NS 2 A 1 MX	🔓 Insecure
2026-09-08 23:01:36	2567ms	2 NS 2 A 1 MX	🔓 Insecure
2026-09-01 07:39:12	1875ms	2 NS 2 A 1 MX	🔓 Insecure
2026-08-29 23:21:47	2063ms	2 NS 2 A 1 MX	🔓 Insecure
2026-08-27 15:34:14	1127ms	2 NS 2 A 1 MX	🔓 Insecure
2026-07-14 14:01:55	1419ms	2 NS 2 A 1 MX	🔓 Insecure
2026-06-17 20:41:56	1061ms	2 NS 2 A 1 MX	🔓 Insecure