arc-cm.dk

📜 Historical scan 2026-06-16 13:38:11 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

arc-cm.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was already in the .dk zone when our tracking began on 16 June 2026. Its website address 46.30.213.42 is hosted by One.com A/S (AS51468) in Denmark. Mail is handled by arccm-dk0i.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 this scan: nameservers, A/AAAA, MX, TXT, SPF, DMARC, CAA, TLSA/DANE, MTA-STS, SRV and more.

🖥️ Nameservers#

2 records 48ms

Nameserver	IP addresses	PTR	ASN / ISP
ns01.one.com	—	—	—
ns02.one.com	—	—	—

🌍 A Records#

1 records 48ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
46.30.213.42	—	webcluster2.webpod12-cph3.one.com	AS51468	One.com A/S	46.30.208.0/21	🇩🇰 Denmark	—

📧 MX Records#

1 records 43ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	—	arccm-dk0i.mail.protection.outlook.com	52.101.68.16 52.101.73.11 52.101.73.2 52.101.73.8	mail-db4pr02cu00400.inbound.protection.outlook.com mail-am1pr04cu00103.inbound.protection.outlook.com mail-as9pr07cu00302.inbound.protection.outlook.com mail-am0pr04cu00500.inbound.protection.outlook.com	AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation

🔷 AAAA Records (IPv6)#

1 records 44ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2a02:2350:5:10a:8056:8414:c6e5:7d19	—	—	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

📝 TXT Records#

2 records 233ms

TXT Record
MS=ms10222420
v=spf1 include:spf.protection.outlook.com -all

✉️ SPF#

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

📨 DMARC#

Policy	Record (_dmarc.arc-cm.dk)
p=reject	v=DMARC1; p=reject

📬 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#

latest probe, not this scan · checked 2026-10-03 12:44:53

www	Address record (no CNAME)
Wildcard	No
Denial of existence	NSEC3 · 0 iterations · no salt RFC 9276 ✓
CDS / CDNSKEY	None 0 CDS, 0 CDNSKEY

✍️ DKIM keys#

1 found

Selector	CNAME	Key
selector1	selector1-arccm-dk0i._domainkey.arccmco.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: 1/10 · policy: -all

No problems found

🔗 TLSA / DANE#

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

🔐 DNSSEC#

161ms

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

🏷️ SOA#

49ms

Field	Value
Serial	2026052801
Primary NS (MNAME)	ns01.one.com
Responsible (RNAME)	hostmaster@one.com
Refresh	14400s
Retry	3600s
Expire	1209600s
Minimum (neg-cache TTL)	600s

📋 Registration#

✗ No registration data yet — queued for a WHOIS lookup

📋 WHOIS#

⏱️ Lookup Timing#

48ms

43ms

AAAA

44ms

TXT

233ms

CAA

58ms

HTTPS

48ms

TLSA

131ms

SOA

49ms

MTA-STS

43ms

DNSSEC

161ms

SRV

0ms

Total

860ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-03 12:44:53	970ms	2 NS 1 A 1 MX	🔒 Secure
2026-10-01 01:22:59	555ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-30 20:28:41	991ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-26 19:36:54	693ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-03 17:30:50	644ms	2 NS 1 A 1 MX	🔒 Secure
2026-08-28 09:58:21	904ms	2 NS 1 A 1 MX	🔒 Secure
2026-08-20 23:55:38	5832ms	2 NS 1 A 1 MX	🔒 Secure
2026-08-01 06:38:05	1822ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-30 03:14:32	913ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-22 03:34:39	1466ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-21 23:17:55	1186ms	0 NS 0 A 0 MX	❓ Unknown
2026-06-16 13:38:11 shown	860ms	2 NS 1 A 1 MX	🔒 Secure