cs-inst.dk DNS records

🖥️ Nameservers2 records 205ms

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 Records1 records 160ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
195.47.247.18	3600s	one.com.webforward.g1i.one	AS51468	One.com A/S	195.47.247.0/24	—	—

📧 MX Records1 records 209ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	3600s	csinst-dk0e.mail.protection.outlook.com	2a01:111:f403:ca04::6 2a01:111:f403:ca09::4 2a01:111:f403:ca09::5 2a01:111:f403:ca09::8 52.101.68.25 52.101.68.27 52.101.68.32 52.101.68.36	mail-db4pr02cu00406.inbound.protection.outlook.com mail-am0pr04cu00504.inbound.protection.outlook.com mail-am1pr04cu00105.inbound.protection.outlook.com mail-as2pr05cu00100.inbound.protection.outlook.com mail-db8pr02cu00101.inbound.protection.outlook.com mail-db7pr03cu00503.inbound.protection.outlook.com mail-db3pr0202cu00200.inbound.protection.outlook.com mail-db5pr02cu00104.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 Records1 records 307ms

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

📝 TXT Records2 records 519ms

TXT Record
MS=ms76754877
v=spf1 include:spf.protection.outlook.com -all

✉️ SPF

Policy	Record (cs-inst.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)

🔐 DNSSEC361ms

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

🏷️ SOA0ms

Field	Value
Serial	2026081101
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 — collected automatically when SOA serial changes

📋 WHOIS

⏱️ Lookup Timing

NS

205ms

A

160ms

MX

209ms

AAAA

234ms

TXT

519ms

CAA

167ms

HTTPS

265ms

TLSA

481ms

SOA

0ms

MTA-STS

255ms

DNSSEC

361ms

SRV

307ms

Total

4296ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-12 08:24:04	4296ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-07-18 16:50:59	3795ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-07-13 13:00:08	3212ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-07-08 18:57:08	1462ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-25 21:26:00	1057ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-23 10:45:27	906ms	0 NS 0 A 0 MX	❓ Unknown	View
2026-06-20 03:06:11	1208ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-17 00:36:09	65535ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-16 23:06:18	744ms	2 NS 1 A 1 MX	🔒 Secure	View