system-one.dk DNS records

🖥️ Nameservers4 records 36ms

Nameserver	IP addresses	PTR	ASN / ISP
ns1.simply.com	2a02:2339:1:15c::4562:4562 91.197.248.78	ns1.simply.com ns1.simply.com	AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S
ns2.simply.com	185.25.141.15 2a02:2339:4006:101::4562:4562	ns2.simply.com ns2.simply.com	AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S
ns3.simply.com	91.197.248.79	ns3.simply.com	AS48854 team.blue Denmark A/S
ns4.simply.com	91.197.248.80	ns4.simply.com	AS48854 team.blue Denmark A/S

🌍 A Records1 records 37ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
198.202.211.1	300s	—	AS209242	Cloudflare London, LLC	198.202.211.0/24	🇺🇸 United States	—

📧 MX Records1 records 24ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	3600s	systemone-dk01e.mail.protection.outlook.com	2a01:111:f403:ca04::d 2a01:111:f403:ca04::f 2a01:111:f403:ca09::28 2a01:111:f403:ca09::a 52.101.103.140 52.101.68.0 52.101.68.16 52.101.68.25	mail-db6pr03cu00105.inbound.protection.outlook.com mail-db7pr03cu00507.inbound.protection.outlook.com mail-am6pr02cu00300.inbound.protection.outlook.com mail-am7pr02cu00202.inbound.protection.outlook.com mail-miypr02cu00204.inbound.protection.outlook.com mail-db3pr0202cu00100.inbound.protection.outlook.com mail-db4pr02cu00400.inbound.protection.outlook.com mail-db8pr02cu00101.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 → 40.104.116.56
🔶 Autoconfig	93.191.156.200

🔷 AAAA Records (IPv6)

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records2 records 148ms

TXT Record
MS=ms30412209
v=spf1 include:spf.protection.outlook.com include:mailgun.org ip4:157.230.20.253 -all

✉️ SPF

Policy	Record (system-one.dk)
-all (hard fail)	v=spf1 include:spf.protection.outlook.com include:mailgun.org ip4:157.230.20.253 -all

📨 DMARC

Policy	Record (_dmarc.system-one.dk)
p=reject	v=DMARC1; p=reject; pct=100; rua=mailto:nmlwdx28@ag.eu.dmarcian.com;

📬 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)

🔐 DNSSEC73ms

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

🏷️ SOA0ms

Field	Value
Serial	2026060900
Primary NS (MNAME)	ns1.simply.com
Responsible (RNAME)	hostmaster@simply.com
Refresh	14400s
Retry	3600s
Expire	1209600s
Minimum (neg-cache TTL)	3600s

📋 Registration

✗ No registration data — collected automatically when SOA serial changes

📋 WHOIS

⏱️ Lookup Timing

NS

36ms

A

37ms

MX

24ms

AAAA

34ms

TXT

148ms

CAA

43ms

HTTPS

43ms

TLSA

3883ms

SOA

0ms

MTA-STS

60ms

DNSSEC

73ms

SRV

59ms

Total

4460ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-09-04 18:38:09	4460ms	4 NS 1 A 1 MX	🔒 Secure	View
2026-09-02 02:25:16	1381ms	4 NS 1 A 1 MX	🔒 Secure	View
2026-08-26 09:24:22	2285ms	4 NS 1 A 1 MX	🔒 Secure	View
2026-08-25 06:17:27	1522ms	4 NS 1 A 1 MX	🔒 Secure	View
2026-06-29 15:53:01	1203ms	4 NS 1 A 1 MX	🔒 Secure	View
2026-06-27 08:08:18	1237ms	4 NS 1 A 1 MX	🔒 Secure	View
2026-06-26 02:09:01	1382ms	4 NS 1 A 1 MX	🔒 Secure	View
2026-06-24 02:47:43	1607ms	4 NS 1 A 1 MX	🔒 Secure	View
2026-06-17 23:22:45	1173ms	4 NS 1 A 1 MX	🔒 Secure	View