Data as of Nov 5, 2026

128.31.0.0/24

1 anonymizer address · 0.39% · Tor exit1 residential-proxy exit · 30 days

Massachusetts Institute of Technology

Announcement
No RPKI
Announced by
Type
Business
>99% of it

Residential-proxy exits

Proxy exits
1
0.39% of its addresses · 30 days
Always-on exits
1
100% of its exits
Providers
20
selling exits here
Oct 6, 2026 – Nov 4, 2026

Exits seen per day

84 observations

Proxy providers listing exits

  • 711Proxy
  • BirdProxies
  • BottingTools
  • ByteProxies
  • Byteful
  • DataImpulse
  • FlashProxy
  • FloppyData
  • GoProxies
  • Infatica
  • Kookey
  • Oxylabs
  • PacketStream
  • Proxy-Seller
  • ProxyEmpire
  • ProxyRack
  • ProxyWing
  • Proxying
  • Proxyma
  • Thordata
IPv4 market

Path

1 · Holder
2 · Leased from
not leased
3 · Announced by
AS3 Massachusetts Institute of Technology
since Jul 2005 · 21.3 yr ago
4 · Use
named Tor
Business

Operators, sellers and brokers

Tor

NameParentIn 128.31.0.0/24/24s
TorThe Tor Project
10.39%
1

Registrations in this block

The registry's network records over this block, widest first, each under its parent.

RangeAddressesNetnameHolderTypeCreatedAbuse contact
128.31.0.0/1665,536MIT-RESMassachusetts Institute of Technology (MIT-2) · USDirect AllocationMay 27, 1983arin-mit-security@mit.edu

Composition

The types across the prefix's announced space, by addresses.

Announced space

Address share

Announced space

Types across the prefix

256 addresses
TypeAddressesShareRanges
Business255>99%2
Tor exitanonymizer10.39%1

Network & registry

Announced by

Covering announcement 128.30.0.0/15

Prefix
128.30.0.0/15
Announced by
AS3 Massachusetts Institute of Technology
Type
Business
Anonymizer addresses
1 addresses · <0.01%Tor exit
Operator
operated by Tor
Proxy exits
5
Always-on exits
2
RPKI
No RPKI
RIR
ARIN
IPv4 market

Holder

Organization
Not stated by the registry
Origin network

AS3

US
Name
Massachusetts Institute of Technology
Type
Education
Domain
mit.edu
Website
mit.edu
Industry
Colleges, Universities, and Professional Schools
Spamhaus ASN-DROP
not listed
Tor exits
1