scratch.mit.edu.com - robtex.com

scratch.mit.edu.com

DNSSEC⚠️ Not signed
A2606:4700:3035::6815:3993🇺🇸 Cloudflare2606:4700:3035::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3035::ac43:92a4🇺🇸 Cloudflare2606:4700:3035::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.57.147Cloudflare104.21.48.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.146.164🇺🇸 Cloudflare172.67.144.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4104.21.57.147, 172.67.146.164
IPv62606:4700:3035::6815:3993, 2606:4700:3035::ac43:92a4

mit.edu.com

DNSSEC⚠️ Not signed
A2606:4700:3035::6815:3993🇺🇸 Cloudflare2606:4700:3035::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3035::ac43:92a4🇺🇸 Cloudflare2606:4700:3035::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.57.147Cloudflare104.21.48.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.146.164🇺🇸 Cloudflare172.67.144.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4104.21.57.147, 172.67.146.164
IPv62606:4700:3035::6815:3993, 2606:4700:3035::ac43:92a4
WOT: SAFE (50/100)
WOT: SAFE (45/100)

Same first word

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DNS History

4 records (4 active, 0 former)

A104.21.57.147172.67.146.1642606:4700:3035::6815:39932606:4700:3035::ac43:92a4
●A104.21.57.1472026-03-01 → 2026-03-23 · 2 obs
● 2026-03-01 04:52:38
● 2026-03-23 22:56:02
●A172.67.146.1642026-03-01 → 2026-03-23 · 2 obs
● 2026-03-01 04:52:38
● 2026-03-23 22:56:02
●A2606:4700:3035::6815:39932026-03-01 → 2026-03-23 · 2 obs
● 2026-03-01 04:52:38
● 2026-03-23 22:56:02
●A2606:4700:3035::ac43:92a42026-03-01 → 2026-03-23 · 2 obs
● 2026-03-01 04:52:38
● 2026-03-23 22:56:02

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
coma.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...-
edu.comjosephine.ns.cloudflare.com, sonny.ns.cloudflare.com12 records

✅ Authoritative Response

Server:108.162.194.64

NS records: josephine.ns.cloudflare.com, sonny.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for edu.com (unsigned zone)

⏱️ Timing

Total: 85ms | Queries: -

📄 Records

TypeCountSample Data
A2172.67.146.164, 104.21.57.147
AAAA22606:4700:3035::6815:3993, 2606:4700:3035::ac43:92a4
HTTPS1{"priority":1,"target":".","alpn":["h3",

📌 Glue Records Collected

Total: 12

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

Analysis

IP Addresses

scratch.mit.edu.com refers to four IP numbers: 2606:4700:3035::6815:3993, 2606:4700:3035::ac43:92a4, 104.21.57.147 and 172.67.146.164.

Other host names, for instance dccd.edu.com, 31-133-4-70.hosteam.pl, unused-31-133-5-139.hosteam.pl, unused-91-216-191-121.hosteam.pl and unused-178-217-190-73.hosteam.pl share IP numbers with scratch.mit.edu.com.