simplex-group.dk DNS records

🖥️ Nameservers2 records 87ms

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 41ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
213.5.39.153	600s	ispconfig.eero.dk	AS49974	Bo data ApS	213.5.32.0/21	🇩🇰 Denmark	Vildbjerg

📧 MX Records1 records 37ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	3600s	simplexgroup-dk01i.mail.protection.outlook.com	2a01:111:f403:ca09::1 2a01:111:f403:ca09::2 2a01:111:f403:ca09::8 2a01:111:f403:ca09::b 52.101.209.153 52.101.68.16 52.101.73.16 52.101.73.6	mail-as9pr07cu00301.inbound.protection.outlook.com mail-am0pr83cu00402.inbound.protection.outlook.com mail-as2pr05cu00100.inbound.protection.outlook.com mail-am7pr05cu00103.inbound.protection.outlook.com mail-cpjpr04cu00101.inbound.protection.outlook.com mail-db4pr02cu00400.inbound.protection.outlook.com mail-as2pr05cu00100.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 → 40.104.116.8

🔷 AAAA Records (IPv6)

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records

✗ No HTTPS RR — no SVCB/HTTPS service binding

🔌 SRV Records1 records 139ms

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

📝 TXT Records2 records 238ms

TXT Record
MS=ms51707722
v=spf1 a mx include:spf.protection.outlook.com -all

✉️ SPF

Policy	Record (simplex-group.dk)
-all (hard fail)	v=spf1 a mx include:spf.protection.outlook.com -all

📨 DMARC

Policy	Record (_dmarc.simplex-group.dk)
p=none (monitor only)	v=DMARC1; p=none; aspf=s;

📬 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)

🔐 DNSSEC156ms

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

🏷️ SOA0ms

Field	Value
Serial	2026082501
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

87ms

A

41ms

MX

37ms

AAAA

101ms

TXT

238ms

CAA

107ms

HTTPS

57ms

TLSA

518ms

SOA

0ms

MTA-STS

119ms

DNSSEC

156ms

SRV

139ms

Total

1510ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-27 12:24:24	1510ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-08-26 05:49:18	1361ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-07-15 13:17:26	1352ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-07-03 00:48:35	9738ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-24 02:24:17	916ms	2 NS 1 A 1 MX	⚠️ Bogus	View
2026-06-17 13:36:23	3948ms	2 NS 1 A 1 MX	🔒 Secure	View