syscom.dk

📜 Historical scan 2026-06-18 08:32:45 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

syscom.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 16 February 1998 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 20.82.13.59 is hosted by Microsoft Corporation (AS8075) in The Netherlands. Mail is handled by syscom-dk.mail.protection.outlook.com. The zone is DNSSEC-signed and validates, publishes a DMARC policy and has no IPv6 address. Below are all of its DNS records from this scan: nameservers, A/AAAA, MX, TXT, SPF, DMARC, CAA, TLSA/DANE, MTA-STS, SRV and more.

🖥️ Nameservers#

2 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 Records#

1 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 Records#

1 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 Records#

1 records 1063ms

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

📝 TXT Records#

3 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

🧩 Web & zone#

latest probe, not this scan · checked 2026-10-14 21:10:30

www CNAME	green-moss-024cfdd03.2.azurestaticapps.net (all on azurestaticapps.net) → 20.82.13.59 (AS8075)
www vs bare domain	Same network syscom.dk: 20.82.13.59 (AS8075) www.syscom.dk: 20.82.13.59 (AS8075)
Wildcard	No
Denial of existence	NSEC3 · 0 iterations · no salt RFC 9276 ✓
CDS / CDNSKEY	None 0 CDS, 0 CDNSKEY

✍️ DKIM keys#

1 found

Selector	CNAME	Key
selector1	selector1-syscom-dk._domainkey.syscomitk.onmicrosoft.com	RSA · ~1024 bit below 2048 bit

DKIM selectors can't be listed, so we check the common ones (Microsoft 365, Google, Mailchimp, SendGrid, generic). Keys under other selectors aren't shown.

🔎 SPF check#

zone-wide SPF report

DNS lookups: 4/10 · policy: ~all

error include:_spf.simitu.dk has no SPF record: receivers that reach it return permerror (RFC 7208 §5.2)

🔗 TLSA / DANE#

✗ No TLSA records — DANE not configured for HTTPS (_443) or MX (_25)

🔐 DNSSEC#

2930ms

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

🏷️ SOA#

926ms

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#

WHOIS fetched 2026-10-07 11:01:56

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	1998-02-16
Expires	2027-03-31 (164d)

📋 WHOIS#

⏱️ Lookup Timing#

740ms

854ms

815ms

AAAA

2872ms

TXT

3123ms

CAA

898ms

HTTPS

839ms

TLSA

849ms

SOA

926ms

MTA-STS

871ms

DNSSEC

2930ms

SRV

1063ms

Total

13440ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-07 10:57:09	1142ms	2 NS 1 A 1 MX	🔒 Secure
2026-10-02 03:16:00	985ms	2 NS 1 A 1 MX	🔒 Secure
2026-10-01 03:12:26	911ms	2 NS 1 A 1 MX	🔒 Secure
2026-10-01 02:19:41	1378ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-24 00:15:24	947ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-18 08:32:45 shown	13440ms	2 NS 1 A 1 MX	🔒 Secure