ftp.dev.udemy.com - robtex.com
ftp.dev.udemy.com
| DNSSEC | ⚠️ Not signed | ||||||
| A | 2606:4700::6810:8eed🇺🇸 Cloudflare2606:4700::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 2606:4700::6810:8fed🇺🇸 Cloudflare2606:4700::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 104.16.142.237Cloudflare104.16.128.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 104.16.143.237Cloudflare104.16.128.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| TXT | v=spf1 include:spf-default.udemy.com -all | ||||||
| HTTPS | HTTP/2 ✓ hints match | ||||||
| IPv4 hints | 104.16.142.237, 104.16.143.237 | ||||||
| IPv6 hints | 2606:4700::6810:8eed, 2606:4700::6810:8fed | ||||||
dev.udemy.com
| DNSSEC | ⚠️ Not signed | ||||||
| A | 2606:4700::6810:8eed🇺🇸 Cloudflare2606:4700::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 2606:4700::6810:8fed🇺🇸 Cloudflare2606:4700::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 104.16.142.237Cloudflare104.16.128.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 104.16.143.237Cloudflare104.16.128.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| TXT | v=spf1 include:spf-default.udemy.com -all | ||||||
| HTTPS | HTTP/2 ✓ hints match | ||||||
| IPv4 hints | 104.16.142.237, 104.16.143.237 | ||||||
| IPv6 hints | 2606:4700::6810:8eed, 2606:4700::6810:8fed | ||||||
WOT: SUSPICIOUS (44/100)
Same first word
Similar names
DNS History
5 records (4 active, 1 former)
●A104.16.142.2372026-02-15 → 2026-08-13 · 3 obs
○ 2017-11-05 11:47:34
● 2026-02-15 23:30:22
● 2026-08-13 02:12:20
● 2026-02-15 23:30:22
● 2026-08-13 02:12:20
●A104.16.143.2372026-02-15 → 2026-08-13 · 3 obs
○ 2017-11-05 11:47:34
● 2026-02-15 23:30:22
● 2026-08-13 02:12:20
● 2026-02-15 23:30:22
● 2026-08-13 02:12:20
○A199.102.106.552017-11-05 → 2017-11-05 · 3 obs
● 2017-11-05 11:47:34
○ 2026-02-15 23:30:22
○ 2026-08-13 02:12:20
○ 2026-02-15 23:30:22
○ 2026-08-13 02:12:20
●A2606:4700::6810:8eed2026-02-15 → 2026-08-13 · 3 obs
○ 2017-11-05 11:47:34
● 2026-02-15 23:30:22
● 2026-08-13 02:12:20
● 2026-02-15 23:30:22
● 2026-08-13 02:12:20
●A2606:4700::6810:8fed2026-02-15 → 2026-08-13 · 3 obs
○ 2017-11-05 11:47:34
● 2026-02-15 23:30:22
● 2026-08-13 02:12:20
● 2026-02-15 23:30:22
● 2026-08-13 02:12:20
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | l.gtld-servers.net, j.gtld-servers.net, h.gtld-servers.net, d.gtld-servers.net... | - |
| udemy.com | pete.ns.cloudflare.com, anna.ns.cloudflare.com | 12 records |
✅ Authoritative Response
Server:108.162.192.102
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: 1042ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 2 | 104.16.143.237, 104.16.142.237 |
| AAAA | 2 | 2606:4700::6810:8fed, 2606:4700::6810:8eed |
| TXT | 1 | v=spf1 include:spf-default.udemy.com -al |
| HTTPS | 1 | {"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
ftp.dev.udemy.com directs to four IP numbers, which are 104.16.142.237, 104.16.143.237, 2606:4700::6810:8eed and 2606:4700::6810:8fed.
Among the host names that share IP numbers with ftp.dev.udemy.com are ls.udemy.com, media.udemy.com, pixida.udemy.com and two others.