dahlstrøm-byg.dk DNS records

🖥️ Nameservers2 records 40ms

Nameserver	IP addresses	PTR	ASN / ISP
desi.ns.cloudflare.com	108.162.192.96 172.64.32.96 173.245.58.96 2606:4700:50::adf5:3a60 2803:f800:50::6ca2:c060 2a06:98c1:50::ac40:2060	desi.ns.cloudflare.com desi.ns.cloudflare.com desi.ns.cloudflare.com desi.ns.cloudflare.com desi.ns.cloudflare.com desi.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
jim.ns.cloudflare.com	108.162.193.125 172.64.33.125 173.245.59.125 2606:4700:58::adf5:3b7d 2803:f800:50::6ca2:c17d 2a06:98c1:50::ac40:217d	jim.ns.cloudflare.com jim.ns.cloudflare.com jim.ns.cloudflare.com jim.ns.cloudflare.com jim.ns.cloudflare.com jim.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.

🌍 A Records

🌍

No A records found

📧 MX Records1 records 44ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	300s	xndahlstrmbyg1jb-dk0m2bb.mail.protection.outlook.com	2a01:111:f403:ca04::1 2a01:111:f403:ca04::10 2a01:111:f403:ca09::c 2a01:111:f403:ca48::c 52.101.68.16 52.101.68.29 52.101.73.4 52.101.73.6	mail-db7pr03cu00401.inbound.protection.outlook.com mail-dbapr03cu00100.inbound.protection.outlook.com mail-as8pr05cu00304.inbound.protection.outlook.com mail-miypr03cu00104.inbound.protection.outlook.com mail-db4pr02cu00400.inbound.protection.outlook.com mail-dbapr03cu00105.inbound.protection.outlook.com mail-am0pr83cu00404.inbound.protection.outlook.com mail-am6pr04cu00306.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 → 40.104.116.8
🔶 Autoconfig	172.67.165.57

🔷 AAAA Records (IPv6)

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records2 records 206ms

TXT Record
MS=ms45445088
v=spf1 include:spf.protection.outlook.com -all

✉️ SPF

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

📨 DMARC

Policy	Record (_dmarc.dahlstrøm-byg.dk)
p=reject	v=DMARC1; p=reject; rua=mailto:7107ccf174044ae4bdf67208e667cb3b@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

🔗 TLSA / DANE

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

🔐 DNSSEC86ms

Check	Result
Validation Status	🔒 Secure
AD Flag (resolver validates)	✓ Set
DS Record	✓ Found
DNSKEY Record	✓ Found
Flags	resolution failed: ncache nxrrset

🏷️ SOA0ms

Field	Value
Serial	2412560232
Primary NS (MNAME)	desi.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

40ms

A

42ms

MX

44ms

AAAA

49ms

TXT

206ms

CAA

53ms

HTTPS

29ms

TLSA

383ms

SOA

0ms

MTA-STS

63ms

DNSSEC

86ms

SRV

75ms

Total

983ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-25 23:33:11	983ms	2 NS 0 A 1 MX	🔒 Secure	View
2026-08-19 08:22:51	1727ms	2 NS 0 A 1 MX	🔒 Secure	View
2026-07-28 15:45:32	4366ms	2 NS 0 A 1 MX	🔒 Secure	View
2026-07-26 11:39:02	1623ms	2 NS 0 A 1 MX	🔒 Secure	View
2026-07-18 05:06:59	3856ms	2 NS 0 A 1 MX	🔒 Secure	View
2026-07-03 14:14:06	10758ms	2 NS 0 A 1 MX	🔒 Secure	View
2026-06-25 12:54:18	1673ms	2 NS 0 A 1 MX	⚠️ Bogus	View
2026-06-21 11:29:03	314ms	0 NS 0 A 0 MX	🔒 Secure	View
2026-06-21 04:35:58	1237ms	2 NS 0 A 1 MX	🔒 Secure	View
2026-06-21 02:44:47	341ms	0 NS 0 A 0 MX	🔒 Secure	View
2026-06-16 23:43:57	543ms	2 NS 0 A 1 MX	⚠️ Bogus	View
2026-06-16 23:41:33	3098ms	2 NS 0 A 1 MX	🔒 Secure	View