syscom.dk DNS records

🖥️ Nameservers2 records 740ms

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 854ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
20.82.13.59	—	—	AS8075	Microsoft Corporation	20.64.0.0/10	🇳🇱 The Netherlands	Amsterdam

📧 MX Records1 records 815ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	—	syscom-dk.mail.protection.outlook.com	2a01:111:f403:ca04::2 2a01:111:f403:ca04::7 2a01:111:f403:ca04::f 2a01:111:f403:ca09::d 52.101.68.10 52.101.68.3 52.101.68.36 52.101.68.39	mail-du2pr03cu00102.inbound.protection.outlook.com mail-db4pr02cu00307.inbound.protection.outlook.com mail-db7pr03cu00507.inbound.protection.outlook.com mail-as9pr05cu01305.inbound.protection.outlook.com mail-dbbpr03cu00102.inbound.protection.outlook.com mail-db7pr03cu00403.inbound.protection.outlook.com mail-db5pr02cu00104.inbound.protection.outlook.com mail-db7pr03cu00607.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 → 40.99.149.216

🔷 AAAA Records (IPv6)

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records

✗ No HTTPS RR — no SVCB/HTTPS service binding

🔌 SRV Records1 records 1063ms

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

📝 TXT Records3 records 3123ms

TXT Record
_5ofvnxd7owzhovadgtrzqtfdbb8at2j
MS=ms69838550
v=spf1 include:_spf.mlsend.com include:spf.syscom.dk include:_spf.simitu.dk include:spf.protection.outlook.com ~all

✉️ SPF

Policy	Record (syscom.dk)
~all (soft fail)	v=spf1 include:_spf.mlsend.com include:spf.syscom.dk include:_spf.simitu.dk include:spf.protection.outlook.com ~all

📨 DMARC

Policy	Record (_dmarc.syscom.dk)
p=reject	v=DMARC1; p=reject; rua=mailto:dmarclogs@syscom.dk

📬 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)

🔐 DNSSEC2930ms

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

🏷️ SOA926ms

Field	Value
Serial	2026032501
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

740ms

A

854ms

MX

815ms

AAAA

2872ms

TXT

3123ms

CAA

898ms

HTTPS

839ms

TLSA

849ms

SOA

926ms

MTA-STS

871ms

DNSSEC

2930ms

SRV

1063ms

Total

13440ms