square4u.dk DNS records

🖥️ Nameservers4 records 47ms

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 44ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
195.249.159.144	3600s	—	AS3292	TDC Holding A/S	195.249.0.0/16	🇩🇰 Denmark	Frederiksberg

📧 MX Records1 records 47ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	3600s	square4u-dk.mail.protection.outlook.com	2a01:111:f403:ca09::1 2a01:111:f403:ca09::26 2a01:111:f403:ca09::7 2a01:111:f403:ca09::d 52.101.68.16 52.101.73.11 52.101.73.2 52.101.73.6	mail-as9pr07cu00301.inbound.protection.outlook.com mail-am8pr83cu00106.inbound.protection.outlook.com mail-am9pr04cu00107.inbound.protection.outlook.com mail-as9pr05cu01305.inbound.protection.outlook.com mail-db4pr02cu00400.inbound.protection.outlook.com mail-am1pr04cu00103.inbound.protection.outlook.com mail-as9pr07cu00302.inbound.protection.outlook.com mail-am6pr04cu00306.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
🔶 Autoconfig	195.249.159.144

🔷 AAAA Records (IPv6)

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records1 records 135ms

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

✉️ SPF

Policy	Record (square4u.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

🔗 TLSA / DANE

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

🔐 DNSSEC88ms

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

🏷️ SOA0ms

Field	Value
Serial	2020072990
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

47ms

A

44ms

MX

47ms

AAAA

34ms

TXT

135ms

CAA

50ms

HTTPS

54ms

TLSA

364ms

SOA

0ms

MTA-STS

58ms

DNSSEC

88ms

SRV

63ms

Total

922ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-28 08:06:18	922ms	4 NS 1 A 1 MX	🔒 Secure	View
2026-06-28 23:53:19	1280ms	4 NS 1 A 1 MX	🔒 Secure	View
2026-06-25 09:59:12	1146ms	4 NS 1 A 1 MX	🔒 Secure	View
2026-06-23 02:34:10	1229ms	4 NS 1 A 1 MX	🔒 Secure	View
2026-06-18 03:29:14	4653ms	4 NS 1 A 1 MX	🔒 Secure	View