arc-group.dk DNS records

🖥️ Nameservers2 records 42ms

Nameserver	IP addresses	PTR	ASN / ISP
ns01.one.com	195.206.121.10 2001:67c:28cc::10	ns01.one.com ns01.one.com	AS197495 One.com A/S AS197495 One.com A/S
ns02.one.com	185.10.11.10 2001:67c:3c0::10	ns02.one.com ns02.one.com	AS51468 One.com A/S AS51468 One.com A/S

🌍 A Records1 records 35ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
46.30.213.30	3600s	webcluster1.webpod12-cph3.one.com	AS51468	One.com A/S	46.30.208.0/21	🇩🇰 Denmark	Copenhagen

📧 MX Records1 records 50ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	3600s	arcgroup-dk0i.mail.protection.outlook.com	2a01:111:f403:ca04:: 2a01:111:f403:ca04::1 2a01:111:f403:ca09::8 2a01:111:f403:ca09::f 52.101.103.137 52.101.209.153 52.101.73.16 52.101.73.26	mail-db3pr0202cu00100.inbound.protection.outlook.com mail-db7pr03cu00401.inbound.protection.outlook.com mail-as2pr05cu00100.inbound.protection.outlook.com mail-am7pr05cu00307.inbound.protection.outlook.com mail-miypr02cu00101.inbound.protection.outlook.com mail-cpjpr04cu00101.inbound.protection.outlook.com mail-as2pr05cu00100.inbound.protection.outlook.com mail-as9pr05cu01302.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

🔷 AAAA Records (IPv6)1 records 39ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2a02:2350:5:10a:f7:cf03:2ca3:2e53	3600s	—	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 Records2 records 206ms

TXT Record
MS=ms27116270
v=spf1 include:spf.protection.outlook.com -all

✉️ SPF

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

📨 DMARC

Policy	Record (_dmarc.arc-group.dk)
p=reject	v=DMARC1; p=reject; sp=reject; rua=mailto:it@arc-group.dk; ruf=mailto:it@arc-group.dk; pct=100; fo=1;

📬 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)

🔐 DNSSEC91ms

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

🏷️ SOA0ms

Field	Value
Serial	2026082404
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 — collected automatically when SOA serial changes

📋 WHOIS

⏱️ Lookup Timing

NS

42ms

A

35ms

MX

50ms

AAAA

39ms

TXT

206ms

CAA

42ms

HTTPS

22ms

TLSA

183ms

SOA

0ms

MTA-STS

67ms

DNSSEC

91ms

SRV

64ms

Total

856ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-28 05:38:17	856ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-08-25 17:40:56	1682ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-08-24 17:15:10	24591ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-08-20 05:42:41	9395ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-07-29 09:39:11	5964ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-07-20 12:30:51	1268ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-07-03 16:16:51	1293ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-27 13:54:39	1291ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-21 21:58:07	1131ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-16 13:38:35	875ms	2 NS 1 A 1 MX	🔒 Secure	View