Autonomous system
AS3 MIT-GATEWAYS
Education ARIN
Summary
Massachusetts Institute of Technology (MIT)
education research legacy
One of the oldest allocations on the internet (MIT-GATEWAYS), serving the Massachusetts Institute of Technology in Cambridge, Massachusetts.
What it's used for
- Campus, research, and administrative networking for MIT.
- Historically the announcing ASN for the legacy
18.0.0.0/8block — a full "Class A" (16.7M addresses) assigned to MIT in the early internet.
Notable
- In 2017 MIT announced it would sell about half of
18/8(roughly 8 million IPv4 addresses) since it no longer needed them; a portion went to Amazon. - A single-digit AS number reflects how early MIT connected — these were handed out sequentially in the internet's first years.
Interesting
- MIT's early networking work (and its stewardship of a whole /8) makes AS3 a frequent landmark when people explore the very bottom of the ASN space.
This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy. Source, and how to suggest an edit.
Interconnection
Peering at a glance
Internet exchanges
Recorded at 1 exchange in 1 country, largest first.
| Exchange | Location | Their address |
|---|---|---|
| Massachusetts Internet Exchange | Boston, United States | 206.53.143.8 |
Transit providers
10 upstream, 4 downstream and 25 adjacent networks observed; most-used upstreams first.
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-13, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 96 prefixes · 1.84M addresses IPv6 6 prefixes
| Country | Name | Prefixes |
|---|---|---|
| US | United States of America | 102 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS3- Registry name
- MIT-GATEWAYS
- Registrant
- Massachusetts Institute of Technology
- Abuse contact
- arin-mit-security@mit.edu
- Last changed
- 2025-12-02
- Allocation
- assigned
Routing security
RPKI and IRR
- RPKI
- 0% valid · 0 valid, 97 with no ROA 2 RPKI-invalid
- ROAs
- 1 authorising AS3
- ASPA
- no ASPA record
- IRR
- 97% registered · 96 of 99 announcements 3 other origin
- Route objects
- 62 naming AS3
Reputation
Classification and threat
Education University, school or national research and education network.
Spamhaus DROP
Not on ASN-DROP The network as a whole is not listed.
No DROP prefixes None of its announced space is on the DROP prefix list.
Spamhaus DROP ("Don't Route Or Peer") lists space and networks run by, or hijacked for, spam and cybercrime operations: 436 networks and 1,771 prefixes, as published 2026-10-13. A short, high-confidence list, so a match is worth taking seriously, and absence from it says little on its own.
FBI IC3
No IC3 indicators Nothing from the FBI IC3 feed.
IC3 threat data is alpha. Absence of an indicator is not evidence of good behaviour, only of absence from this one feed.
Elsewhere