s-inst.dk DNS records

🖥️ Nameservers2 records 33ms

Nameserver	IP addresses	PTR	ASN / ISP
barbara.ns.cloudflare.com	108.162.192.248 172.64.32.248 173.245.58.248 2606:4700:50::adf5:3af8 2803:f800:50::6ca2:c0f8 2a06:98c1:50::ac40:20f8	barbara.ns.cloudflare.com barbara.ns.cloudflare.com barbara.ns.cloudflare.com barbara.ns.cloudflare.com barbara.ns.cloudflare.com barbara.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
justin.ns.cloudflare.com	108.162.193.187 172.64.33.187 173.245.59.187 2606:4700:58::adf5:3bbb 2803:f800:50::6ca2:c1bb 2a06:98c1:50::ac40:21bb	justin.ns.cloudflare.com justin.ns.cloudflare.com justin.ns.cloudflare.com justin.ns.cloudflare.com justin.ns.cloudflare.com justin.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.

🌍 A Records2 records 28ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.21.6.238	300s	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.135.119	300s	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records1 records 34ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	3600s	sinst-dk0c.mail.protection.outlook.com	2a01:111:f403:ca04::8 2a01:111:f403:ca09::9 2a01:111:f403:ca09::b 2a01:111:f403:ca48::a 52.101.103.137 52.101.68.5 52.101.73.11 52.101.73.8	mail-db5pr02cu00100.inbound.protection.outlook.com mail-as8pr04cu00801.inbound.protection.outlook.com mail-am7pr05cu00103.inbound.protection.outlook.com mail-miypr02cu00202.inbound.protection.outlook.com mail-miypr02cu00101.inbound.protection.outlook.com mail-du2pr03cu00105.inbound.protection.outlook.com mail-am1pr04cu00103.inbound.protection.outlook.com mail-am0pr04cu00500.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

🔷 AAAA Records (IPv6)2 records 28ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3030::ac43:8777	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3034::6815:6ee	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records1 records 27ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.6.238,172.67.135.119 ech=AEX+DQBBeQAgACAV+ZluLg002WcJ+6hD4/CA0Rwn2Oc37c8CNEzr8wD0EgAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3030::ac43:8777,2606:4700:3034::6815:6ee

📝 TXT Records2 records 140ms

TXT Record
MS=ms94907939
v=spf1 include:spf.protection.outlook.com include:spf.curanet.dk ip4:193.8.36.0/22 -all

✉️ SPF

Policy	Record (s-inst.dk)
-all (hard fail)	v=spf1 include:spf.protection.outlook.com include:spf.curanet.dk ip4:193.8.36.0/22 -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

🔏 ACME Challenge

Type	Name	Value
TXT	_acme-challenge.s-inst.dk	I5vGA-WhWRRiyn7-54I0LKmgxz_sJyGMSLp4ESwi0mk
TXT	_acme-challenge.s-inst.dk	dd-WGsFnbIb6hY-6w0oADoMQKtQQO-QRflLn4ZmV3TI

🔗 TLSA / DANE

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

🔐 DNSSEC98ms

Check	Result
Validation Status	🔓 Insecure
AD Flag (resolver validates)	✗ Not set
DS Record	✗ Not found
DNSKEY Record	✗ Not found
Flags	unsigned answer

🏷️ SOA0ms

Field	Value
Serial	2413435714
Primary NS (MNAME)	barbara.ns.cloudflare.com
Responsible (RNAME)	dns@cloudflare.com
Refresh	10000s
Retry	2400s
Expire	604800s
Minimum (neg-cache TTL)	1800s

📋 Registration

✗ No registration data — collected automatically when SOA serial changes

📋 WHOIS

⏱️ Lookup Timing

NS

33ms

A

28ms

MX

34ms

AAAA

28ms

TXT

140ms

CAA

31ms

HTTPS

27ms

TLSA

384ms

SOA

0ms

MTA-STS

42ms

DNSSEC

98ms

SRV

74ms

Total

1250ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-29 17:05:45	1250ms	2 NS 2 A 1 MX	🔓 Insecure	View
2026-08-28 07:21:34	1224ms	2 NS 2 A 1 MX	🔓 Insecure	View
2026-07-18 12:17:09	1474ms	2 NS 2 A 1 MX	🔓 Insecure	View
2026-06-18 04:26:12	1725ms	2 NS 2 A 1 MX	🔓 Insecure	View