rfbb.dk DNS records

🖥️ Nameservers2 records 69ms

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 Records2 records 87ms

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 Records1 records 83ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	300s	rfbb-dk.mail.protection.outlook.com	2a01:111:f403:ca09::20 2a01:111:f403:ca09::24 2a01:111:f403:ca09::7 2a01:111:f403:ca09::b 52.101.68.12 52.101.68.32 52.101.73.145 52.101.73.4	mail-as8pr05cu00400.inbound.protection.outlook.com mail-am6pr02cu00204.inbound.protection.outlook.com mail-am9pr04cu00107.inbound.protection.outlook.com mail-am7pr05cu00103.inbound.protection.outlook.com mail-db9pr02cu00204.inbound.protection.outlook.com mail-db3pr0202cu00200.inbound.protection.outlook.com mail-am6pr02cu00301.inbound.protection.outlook.com mail-am0pr83cu00404.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 → 40.104.116.24

🔷 AAAA Records (IPv6)

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records6 records 272ms

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

🔏 ACME Challenge

Type	Name	Value
TXT	_acme-challenge.rfbb.dk	3HPlq8rD50vPxxvPgHoswmUIyHtHQYPMD2LS4QVBECU
TXT	_acme-challenge.rfbb.dk	bOa9qQ4y5RR4syj3mQM3dwkHt1roBYuxUfMBqpRKamo

🔗 TLSA / DANE

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

🔐 DNSSEC205ms

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

🏷️ SOA0ms

Field	Value
Serial	2413652561
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 — collected automatically when SOA serial changes

📋 WHOIS

⏱️ Lookup Timing

NS

69ms

A

87ms

MX

83ms

AAAA

75ms

TXT

272ms

CAA

76ms

HTTPS

79ms

TLSA

859ms

SOA

0ms

MTA-STS

130ms

DNSSEC

205ms

SRV

165ms

Total

1875ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-09-01 07:39:12	1875ms	2 NS 2 A 1 MX	🔓 Insecure	View
2026-08-29 23:21:47	2063ms	2 NS 2 A 1 MX	🔓 Insecure	View
2026-08-27 15:34:14	1127ms	2 NS 2 A 1 MX	🔓 Insecure	View
2026-07-14 14:01:55	1419ms	2 NS 2 A 1 MX	🔓 Insecure	View
2026-06-17 20:41:56	1061ms	2 NS 2 A 1 MX	🔓 Insecure	View