exchangestudent.dk DNS records

🖥️ Nameservers2 records 34ms

Nameserver	IP addresses	PTR	ASN / ISP
harlee.ns.cloudflare.com	108.162.194.238 162.159.38.238 172.64.34.238 2606:4700:50::a29f:26ee 2803:f800:50::6ca2:c2ee 2a06:98c1:50::ac40:22ee	harlee.ns.cloudflare.com harlee.ns.cloudflare.com harlee.ns.cloudflare.com harlee.ns.cloudflare.com harlee.ns.cloudflare.com harlee.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
rudy.ns.cloudflare.com	108.162.193.229 172.64.33.229 173.245.59.229 2606:4700:58::adf5:3be5 2803:f800:50::6ca2:c1e5 2a06:98c1:50::ac40:21e5	rudy.ns.cloudflare.com rudy.ns.cloudflare.com rudy.ns.cloudflare.com rudy.ns.cloudflare.com rudy.ns.cloudflare.com rudy.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.

🌍 A Records2 records 36ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.21.36.22	300s	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.184.49	300s	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records

📧

No MX records found

🔷 AAAA Records (IPv6)2 records 31ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3031::6815:2416	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3033::ac43:b831	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records1 records 40ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.36.22,172.67.184.49 ech=AEX+DQBBbwAgACCcSqCCymWbpZSh2MukAi6EK9cGHbJNtMgI/KWdWVcZYAAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3031::6815:2416,2606:4700:3033::ac43:b831

📝 TXT Records

📝

No TXT records found

✉️ SPF

✗ No SPF record — mail spoofing not restricted

📨 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)

🔐 DNSSEC105ms

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	2413252764
Primary NS (MNAME)	harlee.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

34ms

A

36ms

MX

35ms

AAAA

31ms

TXT

149ms

CAA

38ms

HTTPS

40ms

TLSA

40ms

SOA

0ms

MTA-STS

50ms

DNSSEC

105ms

SRV

51ms

Total

501ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-27 05:00:11	501ms	2 NS 2 A 0 MX	🔓 Insecure	View
2026-08-26 04:56:02	954ms	2 NS 2 A 0 MX	🔓 Insecure	View
2026-08-21 21:02:36	2932ms	2 NS 2 A 0 MX	🔓 Insecure	View
2026-08-19 19:29:29	6635ms	2 NS 2 A 0 MX	🔓 Insecure	View
2026-08-17 07:42:12	4004ms	2 NS 2 A 0 MX	🔓 Insecure	View
2026-08-15 17:18:04	896ms	2 NS 2 A 0 MX	🔓 Insecure	View
2026-08-14 16:54:01	8978ms	2 NS 2 A 0 MX	🔓 Insecure	View
2026-06-28 18:56:25	863ms	2 NS 2 A 0 MX	🔓 Insecure	View
2026-06-26 02:13:40	1902ms	2 NS 2 A 0 MX	🔓 Insecure	View
2026-06-23 00:47:15	4161ms	2 NS 2 A 0 MX	🔓 Insecure	View
2026-06-22 01:09:46	1181ms	0 NS 0 A 0 MX	❓ Unknown	View
2026-06-17 09:08:52	454ms	2 NS 2 A 0 MX	🔓 Insecure	View