ato.dk DNS records

🖥️ Nameservers2 records 35ms

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 27ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
20.224.21.156	3600s	—	AS8075	Microsoft Corporation	20.192.0.0/10	🇳🇱 The Netherlands	Amsterdam

📧 MX Records1 records 31ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	3600s	ato-dk.mail.protection.outlook.com	2a01:111:f403:c967::8 2a01:111:f403:ca04::10 2a01:111:f403:ca21::e 2a01:111:f403:ca48::8 52.101.181.153 52.101.185.21 52.101.68.36 52.101.73.30	mail-cpjpr04cu00100.inbound.protection.outlook.com mail-dbapr03cu00100.inbound.protection.outlook.com mail-matpr04cu00306.inbound.protection.outlook.com mail-miypr02cu00100.inbound.protection.outlook.com mail-wa4pr04cu00101.inbound.protection.outlook.com mail-zrxpr05cu00105.inbound.protection.outlook.com mail-db5pr02cu00104.inbound.protection.outlook.com mail-am7pr05cu00306.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 → 40.104.116.40

🔷 AAAA Records (IPv6)

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records

✗ No HTTPS RR — no SVCB/HTTPS service binding

🔌 SRV Records1 records 47ms

Service	Priority	Weight	Port	Target
_sipfederationtls._tcp	100	1	5061	sipfed.online.lync.com

📝 TXT Records4 records 146ms

TXT Record
google-site-verification=aR-9NhajUFHItPP5nRLYe41CsZmMH7OY_8JgY4Fv_I0
MS=ms95658760
nrg79t5vwwmnbzqj3yndpwxwlw5v36fl
v=spf1 ip4:52.137.1.133 ip4:194.182.2.244 include:spf.mandrillapp.com include:web.shared.mysmtp.com include:spf.protection.outlook.com -all

✉️ SPF

Policy	Record (ato.dk)
-all (hard fail)	v=spf1 ip4:52.137.1.133 ip4:194.182.2.244 include:spf.mandrillapp.com include:web.shared.mysmtp.com include:spf.protection.outlook.com -all

📨 DMARC

Policy	Record (_dmarc.ato.dk)
p=reject	v=DMARC1; p=reject; rua=mailto:kw4mtjma@ag.eu.dmarcian.com; ruf=mailto:kw4mtjma@fr.eu.dmarcian.com; 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)

🔐 DNSSEC109ms

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

🏷️ SOA0ms

Field	Value
Serial	2026090101
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

35ms

A

27ms

MX

31ms

AAAA

28ms

TXT

146ms

CAA

24ms

HTTPS

34ms

TLSA

357ms

SOA

0ms

MTA-STS

44ms

DNSSEC

109ms

SRV

47ms

Total

866ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-09-04 10:59:55	866ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-08-26 01:20:48	1578ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-08-18 05:15:05	5209ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-07-25 19:28:11	1652ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-27 19:20:26	1486ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-24 22:30:07	1112ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-16 13:48:08	930ms	2 NS 1 A 1 MX	🔒 Secure	View