showstopper.dk DNS records

🖥️ Nameservers2 records 21ms

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 28ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
185.255.157.2	3600s	ip185-225-157-2.ip.asom-net.dk	AS60111	ASOM-Net Forening	185.255.156.0/22	🇩🇰 Denmark	Bredsten

📧 MX Records1 records 31ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	3600s	showstopper-dk.mail.protection.outlook.com	2a01:111:f403:ca04::d 2a01:111:f403:ca09::26 2a01:111:f403:ca09::9 2a01:111:f403:ca38::8 52.101.68.25 52.101.73.11 52.101.73.2 52.101.73.4	mail-db6pr03cu00105.inbound.protection.outlook.com mail-am8pr83cu00106.inbound.protection.outlook.com mail-as8pr04cu00801.inbound.protection.outlook.com mail-wa4pr04cu00100.inbound.protection.outlook.com mail-db8pr02cu00101.inbound.protection.outlook.com mail-am1pr04cu00103.inbound.protection.outlook.com mail-as9pr07cu00302.inbound.protection.outlook.com mail-am0pr83cu00404.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

📝 TXT Records2 records 99ms

TXT Record
MS=ms59153773
v=spf1 include:spf.protection.outlook.com -all

✉️ SPF

Policy	Record (showstopper.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)

🔐 DNSSEC93ms

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

21ms

A

28ms

MX

31ms

AAAA

25ms

TXT

99ms

CAA

31ms

HTTPS

26ms

TLSA

1215ms

SOA

0ms

MTA-STS

36ms

DNSSEC

93ms

SRV

66ms

Total

1629ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-30 15:33:59	1629ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-08-03 16:47:31	5034ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-07-01 13:03:28	1691ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-23 08:22:39	1092ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-23 02:11:57	2972ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-22 17:03:28	1181ms	0 NS 0 A 0 MX	❓ Unknown	View
2026-06-17 13:21:29	2546ms	2 NS 1 A 1 MX	🔒 Secure	View