udacity.dk

📜 Historical scan 2026-07-03 04:58:46 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

udacity.dk is a .dk domain served by 2 nameservers (ingrid.ns.cloudflare.com, kai.ns.cloudflare.com). It was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.15.49 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by .. The zone is not DNSSEC-signed, publishes a DMARC policy and is reachable over IPv6. Below are all of its DNS records from this scan: nameservers, A/AAAA, MX, TXT, SPF, DMARC, CAA, TLSA/DANE, MTA-STS, SRV and more.

🖥️ Nameservers#

2 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 Records#

2 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 Records#

1 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 Records#

1 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 Records#

1 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

🧩 Web & zone#

latest probe, not this scan · checked 2026-10-19 03:58:07

www	NXDOMAIN
www vs bare domain	www does not resolve udacity.dk: 104.21.15.49 172.67.161.178 2606:4700:3033::ac43:a1b2 2606:4700:3036::6815:f31 (AS13335) www.udacity.dk: no address (all like this)
Wildcard	No

🔎 SPF check#

zone-wide SPF report

DNS lookups: 0/10 · policy: -all

No problems found

🔗 TLSA / DANE#

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

🔐 DNSSEC#

154ms

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

🏷️ SOA#

97ms

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 yet — queued for a WHOIS lookup

📋 WHOIS#

⏱️ Lookup Timing#

91ms

57ms

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
2026-10-19 03:58:07	2617ms	2 NS 2 A 1 MX	🔓 Insecure
2026-09-27 06:05:13	1031ms	2 NS 2 A 1 MX	🔓 Insecure
2026-09-09 01:47:46	1847ms	2 NS 2 A 1 MX	🔓 Insecure
2026-08-20 14:30:52	6481ms	2 NS 2 A 1 MX	🔓 Insecure
2026-07-03 04:58:46 shown	843ms	2 NS 2 A 1 MX	🔓 Insecure
2026-06-24 22:42:44	784ms	2 NS 2 A 1 MX	🔓 Insecure
2026-06-22 08:01:27	3257ms	2 NS 2 A 1 MX	🔓 Insecure
2026-06-17 13:53:09	2643ms	2 NS 2 A 0 MX	🔓 Insecure