topdahl.dk DNS records

🖥️ Nameservers2 records 38ms

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 40ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
185.21.40.164	3600s	prolinux1.curanet.dk	AS48854	team.blue Denmark A/S	185.21.40.0/22	🇩🇰 Denmark	—

📧 MX Records1 records 36ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	3600s	topdahl-dk.mail.protection.outlook.com	2a01:111:f403:ca04::9 2a01:111:f403:ca04::a 2a01:111:f403:ca04::c 2a01:111:f403:ca04::e 52.101.103.143 52.101.68.5 52.101.73.153 52.101.73.6	mail-db7pr03cu00601.inbound.protection.outlook.com mail-du0pr03cu00102.inbound.protection.outlook.com mail-db9pr02cu00204.inbound.protection.outlook.com mail-db8pr02cu00106.inbound.protection.outlook.com mail-miypr03cu00107.inbound.protection.outlook.com mail-du2pr03cu00105.inbound.protection.outlook.com mail-as8pr05cu00401.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 → 40.104.116.24

🔷 AAAA Records (IPv6)

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records

✗ No HTTPS RR — no SVCB/HTTPS service binding

🔌 SRV Records1 records 63ms

Service	Priority	Weight	Port	Target
_sipfederationtls._tcp	0	1	5061	sipfed.online.lync.com

📝 TXT Records3 records 178ms

TXT Record
linkedin-site-verification=12e86e1a-278a-4d30-8c29-5966f8eda5a1
MS=ms48201809
v=spf1 ip4:182.21.40.164 ip4:77.66.19.19 ip4:185.21.41.223 ip4:185.21.40.116 ip4:185.21.40.164 a:smtp10.zitcom.dk include:spf.protection.outlook.com -all

✉️ SPF

Policy	Record (topdahl.dk)
-all (hard fail)	v=spf1 ip4:182.21.40.164 ip4:77.66.19.19 ip4:185.21.41.223 ip4:185.21.40.116 ip4:185.21.40.164 a:smtp10.zitcom.dk include:spf.protection.outlook.com -all

📨 DMARC

Policy	Record (_dmarc.topdahl.dk)
p=none (monitor only)	v=DMARC1; p=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

🔗 TLSA / DANE

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

🔐 DNSSEC79ms

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

🏷️ SOA0ms

Field	Value
Serial	2026081001
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

38ms

A

40ms

MX

36ms

AAAA

42ms

TXT

178ms

CAA

40ms

HTTPS

50ms

TLSA

367ms

SOA

0ms

MTA-STS

53ms

DNSSEC

79ms

SRV

63ms

Total

989ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-27 18:21:39	989ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-08-11 22:16:23	5894ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-07-20 05:47:46	5248ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-07-18 01:57:03	1218ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-07-12 04:16:03	9290ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-18 07:32:41	858ms	2 NS 1 A 1 MX	🔒 Secure	View