system-design.dk

Records from scan: 2026-10-08 05:29:00 · 1154ms total · last checked 2026-10-16 18:17 (unchanged)

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

system-design.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was already in the .dk zone when our tracking began on 16 June 2026. Its website address 185.4.216.52 is hosted by Itm8 A/S (AS62319) in Denmark. Mail is handled by systemdesign-dk01e.mail.protection.outlook.com. The zone is DNSSEC-signed and validates, has no DMARC policy and has no IPv6 address. Below are all of its DNS records from our latest scan: nameservers, A/AAAA, MX, TXT, SPF, DMARC, CAA, TLSA/DANE, MTA-STS, SRV and more.

🖥️ Nameservers#

2 records 34ms

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 42ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
185.4.216.52	3600s	—	AS62319	Itm8 A/S	185.4.216.0/22	🇩🇰 Denmark	Viby J

📧 MX Records#

1 records 36ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	3600s	systemdesign-dk01e.mail.protection.outlook.com	2a01:111:f403:ca04::d 2a01:111:f403:ca38::a 2a01:111:f403:ca48::10 2a01:111:f403:ca48::12 52.101.209.153 52.101.68.39 52.101.91.162 52.101.91.21	mail-db6pr03cu00105.inbound.protection.outlook.com mail-wa4pr05cu00102.inbound.protection.outlook.com mail-miypr05cu00100.inbound.protection.outlook.com mail-miypr05cu00202.inbound.protection.outlook.com mail-cpjpr04cu00101.inbound.protection.outlook.com mail-db7pr03cu00607.inbound.protection.outlook.com mail-matpr04cu00302.inbound.protection.outlook.com mail-matpr05cu00105.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 Records#

2 records 149ms

TXT Record
MS=ms77454024
v=spf1 include:spf.protection.outlook.com -all

✉️ SPF#

Policy	Record (system-design.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

🧩 Web & zone#

checked 2026-10-08 05:29:00

www	185.4.216.52 (AS62319) (address records, no CNAME)
www vs bare domain	Same network system-design.dk: 185.4.216.52 (AS62319) www.system-design.dk: 185.4.216.52 (AS62319)
Wildcard	No
Denial of existence	NSEC3 · 0 iterations · no salt RFC 9276 ✓
CDS / CDNSKEY	None 0 CDS, 0 CDNSKEY

🔎 SPF check#

zone-wide SPF report

DNS lookups: 1/10 · policy: -all

No problems found

🔗 TLSA / DANE#

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

🔐 DNSSEC#

60ms

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

🏷️ SOA#

44ms

Field	Value
Serial	2026100301
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 yet — queued for a WHOIS lookup

📋 WHOIS#

⏱️ Lookup Timing#

34ms

42ms

36ms

AAAA

44ms

TXT

149ms

CAA

36ms

HTTPS

41ms

TLSA

731ms

SOA

44ms

MTA-STS

51ms

DNSSEC

60ms

SRV

90ms

Total

1154ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-08 05:29:00 shown	1154ms	2 NS 1 A 1 MX	🔒 Secure
2026-10-03 21:17:44	1372ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-29 21:10:12	804ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-28 23:12:31	946ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-23 21:57:46	860ms	2 NS 1 A 1 MX	🔒 Secure
2026-08-17 23:09:53	17362ms	2 NS 1 A 1 MX	🔒 Secure
2026-07-25 21:40:12	5182ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-26 21:54:49	661ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-17 20:06:21	1409ms	2 NS 1 A 1 MX	🔒 Secure