dod.dev.udemy.com - robtex.com

dod.dev.udemy.com

DNSSEC⚠️ Not signed
A2606:4700::6810:8eed🇺🇸 Cloudflare2606:4700::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700::6810:8fed🇺🇸 Cloudflare2606:4700::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.16.142.237Cloudflare104.16.128.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.16.143.237Cloudflare104.16.128.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
TXTv=spf1 include:spf-default.udemy.com -all
HTTPSHTTP/2 ✓ hints match
IPv4 hints104.16.142.237, 104.16.143.237
IPv6 hints2606:4700::6810:8eed, 2606:4700::6810:8fed

dev.udemy.com

DNSSEC⚠️ Not signed
A2606:4700::6810:8eed🇺🇸 Cloudflare2606:4700::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700::6810:8fed🇺🇸 Cloudflare2606:4700::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.16.142.237Cloudflare104.16.128.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.16.143.237Cloudflare104.16.128.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
TXTv=spf1 include:spf-default.udemy.com -all
HTTPSHTTP/2 ✓ hints match
IPv4 hints104.16.142.237, 104.16.143.237
IPv6 hints2606:4700::6810:8eed, 2606:4700::6810:8fed
WOT: SAFE (50/100)
WOT: SUSPICIOUS (44/100)

Same first word

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DNS History

5 records (4 active, 1 former)

201820192020202120222023202420252026A104.16.142.237104.16.143.2372606:4700::6810:8eed2606:4700::6810:8fed199.102.106.55
●A104.16.142.2372026-02-17 → 2026-08-13 · 3 obs
○ 2017-12-06 13:55:00
● 2026-02-17 13:19:24
● 2026-08-13 17:18:34
●A104.16.143.2372026-02-17 → 2026-08-13 · 3 obs
○ 2017-12-06 13:55:00
● 2026-02-17 13:19:24
● 2026-08-13 17:18:34
○A199.102.106.552017-10-11 → 2017-12-06 · 4 obs
● 2017-10-11 13:09:24
● 2017-12-06 13:55:00
○ 2026-02-17 13:19:24
○ 2026-08-13 17:18:34
●A2606:4700::6810:8eed2026-02-17 → 2026-08-13 · 3 obs
○ 2017-12-06 13:55:00
● 2026-02-17 13:19:24
● 2026-08-13 17:18:34
●A2606:4700::6810:8fed2026-02-17 → 2026-08-13 · 3 obs
○ 2017-12-06 13:55:00
● 2026-02-17 13:19:24
● 2026-08-13 17:18:34

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
comc.gtld-servers.net, j.gtld-servers.net, m.gtld-servers.net, h.gtld-servers.net...-
udemy.compete.ns.cloudflare.com, anna.ns.cloudflare.com12 records

✅ Authoritative Response

Server:108.162.193.136

NS records: pete.ns.cloudflare.com, anna.ns.cloudflare.com

🔒 DNSSEC Status

🔐 Secure (DNSSEC validated)

Chain of trust verified from root to domain

⏱️ Timing

Total: 144ms | Queries: -

📄 Records

TypeCountSample Data
A2104.16.143.237, 104.16.142.237
AAAA22606:4700::6810:8fed, 2606:4700::6810:8eed
TXT1v=spf1 include:spf-default.udemy.com -al
HTTPS1{"priority":1,"target":".","alpn":["h2"]

📌 Glue Records Collected

Total: 12

Out-of-bailiwick: 12 (pete.ns.cloudflare.com, pete.ns.cloudflare.com, pete.ns.cloudflare.com...)

Analysis

IP Addresses

dod.dev.udemy.com points to the four IP addresses 104.16.142.237, 104.16.143.237, 2606:4700::6810:8eed and 2606:4700::6810:8fed.

engineering.udemy.com, educational.udemy.com, cisco.udemy.com and two other host names share IP numbers with dod.dev.udemy.com.