rsfp.dk DNS records

🖥️ Nameservers2 records 52ms

Nameserver	IP addresses	PTR	ASN / ISP
linda.ns.cloudflare.com	108.162.192.250 172.64.32.250 173.245.58.250 2606:4700:50::adf5:3afa 2803:f800:50::6ca2:c0fa 2a06:98c1:50::ac40:20fa	linda.ns.cloudflare.com linda.ns.cloudflare.com linda.ns.cloudflare.com linda.ns.cloudflare.com linda.ns.cloudflare.com linda.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
sullivan.ns.cloudflare.com	108.162.195.161 162.159.44.161 172.64.35.161 2606:4700:58::a29f:2ca1 2803:f800:50::6ca2:c3a1 2a06:98c1:50::ac40:23a1	sullivan.ns.cloudflare.com sullivan.ns.cloudflare.com sullivan.ns.cloudflare.com sullivan.ns.cloudflare.com sullivan.ns.cloudflare.com sullivan.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.

🌍 A Records1 records 62ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
46.30.213.66	300s	webcluster1.webpod13-cph3.one.com	AS51468	One.com A/S	46.30.208.0/21	🇩🇰 Denmark	Copenhagen

📧 MX Records2 records 95ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	300s	cloud5.spamtitan.com	52.10.98.167 52.26.55.167 52.32.254.113	cloud5.spamtitan.com cloud5.spamtitan.com cloud5.spamtitan.com	AS16509 Amazon.com, Inc. AS16509 Amazon.com, Inc. AS16509 Amazon.com, Inc.
10	300s	cloud6.spamtitan.com	52.10.98.167 52.26.55.167 52.32.254.113	cloud5.spamtitan.com cloud5.spamtitan.com cloud5.spamtitan.com	AS16509 Amazon.com, Inc. AS16509 Amazon.com, Inc. AS16509 Amazon.com, Inc.

📧 Autodiscover / Autoconfig

Service	CNAME / IP
🔷 Autodiscover	autodiscover.outlook.com → 40.104.116.56
🔶 Autoconfig	46.30.213.66

🔷 AAAA Records (IPv6)1 records 77ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2a02:2350:5:10b:17:c866:4589:ad69	300s	—	AS51468	One.com A/S	2a02:2350:0:0:0:0:0:0/32	🇩🇰 Denmark	Copenhagen

🔐 HTTPS Records

✗ No HTTPS RR — no SVCB/HTTPS service binding

🔌 SRV Records1 records 157ms

Service	Priority	Weight	Port	Target
_sipfederationtls._tcp	100	1	5061	sipfed.online.lync.com

📝 TXT Records7 records 304ms

TXT Record
facebook-domain-verification=1mqz1nhcpor3n5n59mrs73339fgbs1
MS=msXXXXXXXX
ns1.bdm.microsoftonline.com
ns2.bdm.microsoftonline.com
ns3.bdm.microsoftonline.com
ns4.bdm.microsoftonline.com
v=spf1 include:spf.mailjet.com include:_spf.mlsend.com include:spf.protection.outlook.com include:_custspf.one.com include:servers.mcsv.net -all

✉️ SPF

Policy	Record (rsfp.dk)
-all (hard fail)	v=spf1 include:spf.mailjet.com include:_spf.mlsend.com include:spf.protection.outlook.com include:_custspf.one.com include:servers.mcsv.net -all

📨 DMARC

Policy	Record (_dmarc.rsfp.dk)
p=quarantine	v=DMARC1; p=quarantine; pct=10; rua=mailto:janus@rsfp.dk; ruf=mailto:janus@rsfp.dk; sp=none; adkim=s; aspf=s; ri=84600;

📬 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
CNAME	_acme-challenge.rsfp.dk	rsfp.dk.acme.service.one.com

🔗 TLSA / DANE

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

🔐 DNSSEC149ms

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	2412506012
Primary NS (MNAME)	linda.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

52ms

A

62ms

MX

95ms

AAAA

77ms

TXT

304ms

CAA

66ms

HTTPS

80ms

TLSA

229ms

SOA

0ms

MTA-STS

85ms

DNSSEC

149ms

SRV

157ms

Total

1929ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-27 12:29:06	1929ms	2 NS 1 A 2 MX	🔓 Insecure	View
2026-08-25 18:11:27	4708ms	2 NS 1 A 2 MX	🔓 Insecure	View
2026-08-18 21:23:53	8027ms	2 NS 1 A 2 MX	🔓 Insecure	View
2026-08-03 14:03:58	14073ms	2 NS 1 A 2 MX	🔓 Insecure	View
2026-06-21 07:21:27	1280ms	2 NS 1 A 2 MX	🔓 Insecure	View
2026-06-19 22:59:12	2014ms	2 NS 1 A 2 MX	🔓 Insecure	View
2026-06-17 13:44:32	2798ms	2 NS 1 A 2 MX	🔓 Insecure	View