m365bg.dk

Records from scan: 2026-10-16 13:07:37 · 1316ms total · last checked 2026-10-17 14:15 (unchanged)

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

m365bg.dk is a .dk domain served by 2 nameservers (luke.ns.cloudflare.com, rosalyn.ns.cloudflare.com). It was registered on 25 May 2023 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.16.38 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by m365bg-dk.mail.protection.outlook.com. The zone is DNSSEC-signed and validates, publishes a DMARC policy and is reachable over IPv6. 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 27ms

Nameserver	IP addresses	PTR	ASN / ISP
luke.ns.cloudflare.com	108.162.193.200 172.64.33.200 173.245.59.200 2606:4700:58::adf5:3bc8 2803:f800:50::6ca2:c1c8 2a06:98c1:50::ac40:21c8	luke.ns.cloudflare.com luke.ns.cloudflare.com luke.ns.cloudflare.com luke.ns.cloudflare.com luke.ns.cloudflare.com luke.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
rosalyn.ns.cloudflare.com	108.162.194.59 162.159.38.59 172.64.34.59 2606:4700:50::a29f:263b 2803:f800:50::6ca2:c23b 2a06:98c1:50::ac40:223b	rosalyn.ns.cloudflare.com rosalyn.ns.cloudflare.com rosalyn.ns.cloudflare.com rosalyn.ns.cloudflare.com rosalyn.ns.cloudflare.com rosalyn.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 37ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.21.16.38	300s	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.166.21	300s	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records#

1 records 37ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	300s	m365bg-dk.mail.protection.outlook.com	2a01:111:f403:c967::c 2a01:111:f403:ca21::10 2a01:111:f403:ca21::c 2a01:111:f403:ca48::c 52.101.209.31 52.101.68.8 52.101.73.126 52.101.91.162	mail-cpjpr05cu00204.inbound.protection.outlook.com mail-matpr05cu00100.inbound.protection.outlook.com mail-matpr04cu00204.inbound.protection.outlook.com mail-miypr03cu00104.inbound.protection.outlook.com mail-cpjpr05cu00207.inbound.protection.outlook.com mail-du0pr03cu00100.inbound.protection.outlook.com mail-am8pr83cu00106.inbound.protection.outlook.com mail-matpr04cu00302.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)#

2 records 30ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3035::ac43:a615	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3037::6815:1026	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records#

1 records 34ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.16.38,172.67.166.21 ech=AEX+DQBBogAgACBwIGVQ4yG20sFIDGjmHfmfbU7gNmH5i9DCghgHM8f9JQAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3035::ac43:a615,2606:4700:3037::6815:1026

📝 TXT Records#

1 records 191ms

TXT Record
v=spf1 include:spf.protection.outlook.com include:spf.protection.pagedesign.dk -all

✉️ SPF#

Policy	Record (m365bg.dk)
-all (hard fail)	v=spf1 include:spf.protection.outlook.com include:spf.protection.pagedesign.dk -all

📨 DMARC#

Policy	Record (_dmarc.m365bg.dk)
p=none (monitor only)	v=DMARC1; p=none; rua=mailto:63da161ea0e7f@ag.eu.dmarcly.com; ruf=mailto:63da161ea0e7f@fo.eu.dmarcly.com; sp=none;

📬 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 2026-10-16 13:07:37

www	104.21.16.38 172.67.166.21 2606:4700:3035::ac43:a615 2606:4700:3037::6815:1026 (AS13335) (address records, no CNAME)
www vs bare domain	Same network m365bg.dk: 104.21.16.38 172.67.166.21 2606:4700:3035::ac43:a615 2606:4700:3037::6815:1026 (AS13335) www.m365bg.dk: 104.21.16.38 172.67.166.21 2606:4700:3035::ac43:a615 2606:4700:3037::6815:1026 (AS13335)
Wildcard	No
Denial of existence	Compact NSEC (RFC 9824, "black lies") not walkable
CDS / CDNSKEY	Published: key rollovers can be automated with the registry (RFC 7344/8078) 1 CDS, 1 CDNSKEY

✍️ DKIM keys#

2 found

Selector	CNAME	Key
selector1	selector1-m365bg-dk._domainkey.m365bg.onmicrosoft.com	RSA · ~2048 bit
selector2	selector2-m365bg-dk._domainkey.m365bg.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: 2/10 · policy: -all

No problems found

🔗 TLSA / DANE#

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

🔐 DNSSEC#

57ms

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

🏷️ SOA#

34ms

Field	Value
Serial	2417629776
Primary NS (MNAME)	luke.ns.cloudflare.com
Responsible (RNAME)	dns@cloudflare.com
Refresh	10000s
Retry	2400s
Expire	604800s
Minimum (neg-cache TTL)	1800s

📋 Registration#

WHOIS fetched 2026-10-16 03:37:16

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2023-05-25
Expires	2027-05-24 (218d)

🔗 Same registrant#

1 domain

Other .dk domains whose WHOIS registrant has the same name and postal address. Matched on a keyed hash: the registrant's details are not stored or shown. Covers only domains whose WHOIS we have fetched (refreshed about monthly).

Domain	Registrar
office365brugergruppen.dk	Punktum dk A/S (direct)

📋 WHOIS#

⏱️ Lookup Timing#

27ms

37ms

AAAA

30ms

TXT

191ms

CAA

30ms

HTTPS

34ms

TLSA

807ms

SOA

34ms

MTA-STS

48ms

DNSSEC

57ms

SRV

62ms

Total

1316ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-16 13:07:37 shown	1316ms	2 NS 2 A 1 MX	🔒 Secure
2026-10-04 01:31:26	3220ms	2 NS 2 A 1 MX	🔒 Secure
2026-09-23 22:58:16	1363ms	2 NS 2 A 1 MX	🔒 Secure
2026-09-01 00:47:37	2512ms	2 NS 2 A 1 MX	🔒 Secure
2026-08-05 21:19:42	2029ms	2 NS 2 A 1 MX	🔒 Secure
2026-07-02 18:45:56	871ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-22 06:14:48	931ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-19 15:54:40	668ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-17 13:47:19	1960ms	2 NS 1 A 1 MX	🔒 Secure