a15.dk DNS records

🖥️ Nameservers2 records 64ms

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 Records4 records 101ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
198.185.159.144	3600s	—	AS53831	Squarespace, Inc.	198.185.159.0/24	🇺🇸 United States	New York
198.185.159.145	3600s	—	AS53831	Squarespace, Inc.	198.185.159.0/24	🇺🇸 United States	—
198.49.23.144	3600s	—	AS53831	Squarespace, Inc.	198.49.23.0/24	🇺🇸 United States	—
198.49.23.145	3600s	—	AS53831	Squarespace, Inc.	198.49.23.0/24	🇺🇸 United States	—

📧 MX Records1 records 125ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	3600s	a15-dk.mail.protection.outlook.com	2a01:111:f403:ca04::10 2a01:111:f403:ca04::9 2a01:111:f403:ca09:: 2a01:111:f403:ca09::7 52.101.68.15 52.101.68.16 52.101.73.126 52.101.73.153	mail-dbapr03cu00100.inbound.protection.outlook.com mail-db7pr03cu00601.inbound.protection.outlook.com mail-am3pr04cu00500.inbound.protection.outlook.com mail-am9pr04cu00107.inbound.protection.outlook.com mail-db6pr03cu00107.inbound.protection.outlook.com mail-db4pr02cu00400.inbound.protection.outlook.com mail-am8pr83cu00106.inbound.protection.outlook.com mail-as8pr05cu00401.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

📝 TXT Records3 records 306ms

TXT Record
google-site-verification=jI9hkBNB6yWk6T3SFsS3Y5NAhRrwY7EhH1-gAN1YxAo
MS=ms62902966
v=spf1 include:spf.protection.outlook.com -all

✉️ SPF

Policy	Record (a15.dk)
-all (hard fail)	v=spf1 include:spf.protection.outlook.com -all

📨 DMARC

✗ No DMARC record — mail spoofing not restricted

📬 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)

🔐 DNSSEC232ms

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

🏷️ SOA0ms

Field	Value
Serial	2026082901
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

64ms

A

101ms

MX

125ms

AAAA

87ms

TXT

306ms

CAA

87ms

HTTPS

63ms

TLSA

549ms

SOA

0ms

MTA-STS

171ms

DNSSEC

232ms

SRV

284ms

Total

2010ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-30 03:22:07	2010ms	2 NS 4 A 1 MX	🔒 Secure	View
2026-08-26 16:54:06	1038ms	2 NS 4 A 1 MX	🔒 Secure	View
2026-08-12 21:52:48	1781ms	2 NS 4 A 1 MX	🔒 Secure	View
2026-08-07 16:48:07	1937ms	2 NS 4 A 1 MX	🔒 Secure	View
2026-07-25 07:41:35	1358ms	2 NS 4 A 1 MX	🔒 Secure	View
2026-07-21 20:32:02	7252ms	2 NS 4 A 1 MX	🔒 Secure	View
2026-06-26 13:03:54	929ms	2 NS 4 A 1 MX	🔒 Secure	View
2026-06-24 20:18:54	876ms	2 NS 4 A 1 MX	🔒 Secure	View
2026-06-20 16:36:17	821ms	2 NS 4 A 1 MX	🔒 Secure	View
2026-06-16 13:15:16	1379ms	2 NS 4 A 1 MX	🔒 Secure	View