rcn-bolig.dk DNS records

🖥️ Nameservers2 records 138ms

Nameserver	IP addresses	PTR	ASN / ISP
brenna.ns.cloudflare.com	108.162.194.176 162.159.38.176 172.64.34.176 2606:4700:50::a29f:26b0 2803:f800:50::6ca2:c2b0 2a06:98c1:50::ac40:22b0	brenna.ns.cloudflare.com brenna.ns.cloudflare.com brenna.ns.cloudflare.com brenna.ns.cloudflare.com brenna.ns.cloudflare.com brenna.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
martin.ns.cloudflare.com	108.162.195.87 162.159.44.87 172.64.35.87 2606:4700:58::a29f:2c57 2803:f800:50::6ca2:c357 2a06:98c1:50::ac40:2357	martin.ns.cloudflare.com martin.ns.cloudflare.com martin.ns.cloudflare.com martin.ns.cloudflare.com martin.ns.cloudflare.com martin.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.

🌍 A Records2 records 82ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.21.95.41	300s	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.142.250	300s	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records1 records 141ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	3600s	rcnbolig-dk0i.mail.protection.outlook.com	2a01:111:f403:ca04::4 2a01:111:f403:ca04::d 2a01:111:f403:ca09::3 2a01:111:f403:ca09::6 52.101.68.16 52.101.68.39 52.101.73.126 52.101.73.2	mail-db4pr02cu00204.inbound.protection.outlook.com mail-db6pr03cu00105.inbound.protection.outlook.com mail-am6pr04cu00303.inbound.protection.outlook.com mail-am4pr0401cu00106.inbound.protection.outlook.com mail-db4pr02cu00400.inbound.protection.outlook.com mail-db7pr03cu00607.inbound.protection.outlook.com mail-am8pr83cu00106.inbound.protection.outlook.com mail-as9pr07cu00302.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)2 records 90ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3034::6815:5f29	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3037::ac43:8efa	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records1 records 133ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.95.41,172.67.142.250 ech=AEX+DQBBBgAgACDfDeIfKsOOvnernOB07IsmAV5WMXzMdTdtfRQXRroJTwAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3034::6815:5f29,2606:4700:3037::ac43:8efa

📝 TXT Records2 records 367ms

TXT Record
MS=ms20904634
v=spf1 include:spf.protection.outlook.com -all

✉️ SPF

Policy	Record (rcn-bolig.dk)
-all (hard fail)	v=spf1 include:spf.protection.outlook.com -all

📨 DMARC

✗ No DMARC record — mail spoofing not restricted

📬 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

🔗 TLSA / DANE

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

🔐 DNSSEC268ms

Check	Result
Validation Status	🔒 Secure
AD Flag (resolver validates)	✓ Set
DS Record	✓ Found
DNSKEY Record	✓ Found
Flags	fully validated

🏷️ SOA0ms

Field	Value
Serial	2413436968
Primary NS (MNAME)	brenna.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

138ms

A

82ms

MX

141ms

AAAA

90ms

TXT

367ms

CAA

140ms

HTTPS

133ms

TLSA

807ms

SOA

0ms

MTA-STS

188ms

DNSSEC

268ms

SRV

217ms

Total

2442ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-29 01:53:30	2442ms	2 NS 2 A 1 MX	🔒 Secure	View
2026-08-13 19:24:27	2009ms	2 NS 2 A 1 MX	🔒 Secure	View
2026-08-06 22:38:51	3851ms	2 NS 2 A 1 MX	🔒 Secure	View
2026-08-01 19:16:22	1845ms	2 NS 2 A 1 MX	🔒 Secure	View
2026-07-13 22:44:33	1417ms	2 NS 2 A 1 MX	🔒 Secure	View
2026-06-24 03:19:49	1057ms	2 NS 2 A 1 MX	🔒 Secure	View
2026-06-18 07:59:12	1595ms	2 NS 2 A 1 MX	🔒 Secure	View