holm-gruppen.dk DNS records

🖥️ Nameservers2 records 159ms

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 183ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
77.111.240.147	3600s	webcluster20.webpod11-cph3.one.com	AS51468	One.com A/S	77.111.240.0/22	🇩🇰 Denmark	Copenhagen

📧 MX Records1 records 84ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	3600s	holmgruppen-dk01b.mail.protection.outlook.com	2a01:111:f403:ca09::3 2a01:111:f403:ca09::d 2a01:111:f403:ca09::f 2a01:111:f403:ca38::8 52.101.68.12 52.101.68.29 52.101.73.155 52.101.73.19	mail-am6pr04cu00303.inbound.protection.outlook.com mail-as9pr05cu01305.inbound.protection.outlook.com mail-am7pr05cu00307.inbound.protection.outlook.com mail-wa4pr04cu00100.inbound.protection.outlook.com mail-db9pr02cu00204.inbound.protection.outlook.com mail-dbapr03cu00105.inbound.protection.outlook.com mail-am7pr02cu00203.inbound.protection.outlook.com mail-as8pr04cu00803.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)1 records 120ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2a02:2350:5:102:9f:dda9:2e85:af11	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 Records1 records 547ms

TXT Record
v=spf1 include:spf.protection.outlook.com a mx include:_spf.signicat.cloud ip4:91.215.162.220 ip4:217.116.213.122 -all

✉️ SPF

Policy	Record (holm-gruppen.dk)
-all (hard fail)	v=spf1 include:spf.protection.outlook.com a mx include:_spf.signicat.cloud ip4:91.215.162.220 ip4:217.116.213.122 -all

📨 DMARC

Policy	Record (_dmarc.holm-gruppen.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

🔗 TLSA / DANE

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

🔐 DNSSEC445ms

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

🏷️ SOA0ms

Field	Value
Serial	2026082905
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

159ms

A

183ms

MX

84ms

AAAA

120ms

TXT

547ms

CAA

178ms

HTTPS

102ms

TLSA

840ms

SOA

0ms

MTA-STS

241ms

DNSSEC

445ms

SRV

320ms

Total

2851ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-30 02:08:26	2851ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-08-26 14:37:46	1178ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-07-30 22:44:40	1702ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-07-02 15:12:15	1200ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-23 15:36:14	2790ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-23 09:47:17	1117ms	0 NS 0 A 0 MX	❓ Unknown	View
2026-06-17 14:02:44	4100ms	2 NS 1 A 1 MX	🔒 Secure	View