syscom.dk

📜 Historical scan 2026-09-24 00:15:24 · ← 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 42ms

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 37ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
20.82.13.59	3600s	—	AS8075	Microsoft Corporation	20.64.0.0/10	🇳🇱 The Netherlands	Amsterdam

📧 MX Records#

1 records 43ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	3600s	syscom-dk.mail.protection.outlook.com	2a01:111:f403:c967::8 2a01:111:f403:ca04::10 2a01:111:f403:ca04::f 2a01:111:f403:ca3c::8 52.101.103.143 52.101.181.156 52.101.209.28 52.101.209.31	mail-cpjpr04cu00100.inbound.protection.outlook.com mail-dbapr03cu00100.inbound.protection.outlook.com mail-db7pr03cu00507.inbound.protection.outlook.com mail-zrxpr05cu00100.inbound.protection.outlook.com mail-miypr03cu00107.inbound.protection.outlook.com mail-wa4pr05cu00104.inbound.protection.outlook.com mail-cpjpr05cu00104.inbound.protection.outlook.com mail-cpjpr05cu00207.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

🔌 SRV Records#

1 records 78ms

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

📝 TXT Records#

3 records 166ms

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#

124ms

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

🏷️ SOA#

0ms

Field	Value
Serial	2026092101
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#

42ms

37ms

43ms

AAAA

49ms

TXT

166ms

CAA

44ms

HTTPS

49ms

TLSA

302ms

SOA

0ms

MTA-STS

64ms

DNSSEC

124ms

SRV

78ms

Total

947ms

🕐 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 shown	947ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-18 08:32:45	13440ms	2 NS 1 A 1 MX	🔒 Secure