udacity.dk DNS records

🖥️ Nameservers2 records 91ms

Nameserver	IP addresses	PTR	ASN / ISP
ingrid.ns.cloudflare.com	108.162.192.165 172.64.32.165 173.245.58.165 2606:4700:50::adf5:3aa5 2803:f800:50::6ca2:c0a5 2a06:98c1:50::ac40:20a5	ingrid.ns.cloudflare.com ingrid.ns.cloudflare.com ingrid.ns.cloudflare.com ingrid.ns.cloudflare.com ingrid.ns.cloudflare.com ingrid.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
kai.ns.cloudflare.com	108.162.193.188 172.64.33.188 173.245.59.188 2606:4700:58::adf5:3bbc 2803:f800:50::6ca2:c1bc 2a06:98c1:50::ac40:21bc	kai.ns.cloudflare.com kai.ns.cloudflare.com kai.ns.cloudflare.com kai.ns.cloudflare.com kai.ns.cloudflare.com kai.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.

🌍 A Records2 records 57ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.21.15.49	300s	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.161.178	300s	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records1 records 62ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	300s	. Null MX — domain accepts no email (RFC 7505)

🔷 AAAA Records (IPv6)2 records 74ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3033::ac43:a1b2	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3036::6815:f31	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records1 records 90ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.15.49,172.67.161.178 ech=AEX+DQBBPgAgACCO6gaZX31FrTQ2JKqDa0Vn71CmruUmyY3itpyRFrBCWgAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3033::ac43:a1b2,2606:4700:3036::6815:f31

📝 TXT Records1 records 233ms

TXT Record
v=spf1 -all

✉️ SPF

Policy	Record (udacity.dk)
-all (hard fail)	v=spf1 -all

📨 DMARC

Policy	Record (_dmarc.udacity.dk)
p=reject	v=DMARC1; p=reject; rua=; ruf=;

📬 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)

🔐 DNSSEC154ms

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

🏷️ SOA97ms

Field	Value
Serial	2407590368
Primary NS (MNAME)	ingrid.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

91ms

A

57ms

MX

62ms

AAAA

74ms

TXT

233ms

CAA

69ms

HTTPS

90ms

TLSA

57ms

SOA

97ms

MTA-STS

90ms

DNSSEC

154ms

SRV

125ms

Total

843ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-20 14:30:52	6481ms	2 NS 2 A 1 MX	🔓 Insecure	View
2026-07-03 04:58:46	843ms	2 NS 2 A 1 MX	🔓 Insecure	View
2026-06-24 22:42:44	784ms	2 NS 2 A 1 MX	🔓 Insecure	View
2026-06-22 08:01:27	3257ms	2 NS 2 A 1 MX	🔓 Insecure	View
2026-06-17 13:53:09	2643ms	2 NS 2 A 0 MX	🔓 Insecure	View