MASSACHUSETTS INSTITUTE OF TECHNOLOGY
Massachusetts Institute of Technology
Data as of 2026-09-13
GLEIF verified
Complete entity footprint
2 linked clusters ·
126 netblocks ·
2,366,984 IPv4 addresses ·
11 IPv6 prefixes
This organisation's clusters combined by evidence —
shared GLEIF corporate family
— not name similarity, so genuinely different organisations that share a name are excluded.
LEI
DLZO3A31IADZ27B62557
Registered name
MASSACHUSETTS INSTITUTE OF TECHNOLOGY
Jurisdiction
Ultimate parent
No parent on file in GLEIF
This organisation
| Netblocks | 125 · 2,366,984 IPv4 addresses |
| IPv6 | 10 prefixes (largest 2603:4000::/24) |
| Also registered under this name | 138 netblocks across 2 separate records |
| Record ID | 241847673 |
| Registry | BGP |
| Owner jurisdiction | US-MA |
| Customers | see who runs inside this network → |
Evidence & provenance ?
| Attribution | GLEIF legal-entity match |
| Legal identity | LEI DLZO3A31IADZ27B62557 |
| Shared handles | clustered on 27 shared RIR contact/maintainer handles |
| Registry names | 2 distinct registrant names across these blocks |
| full provenance (JSON) → · how attribution works · report an issue | |
IP Ranges (125)
⬇ export CSV| CIDR | Org name | Registry | Status | Confidence |
|---|---|---|---|---|
| 4.21.160.8/29 | Massachusetts Institute of Technology | ARIN | ASSIGNMENT | ● high |
| 18.0.0.0/11 | Massachusetts Institute of Technology | ARIN | DIRECT ALLOCATION | ● high |
| 38.97.116.0/24 | Massachusetts Institute of Technology | BGP | ANNOUNCED | ● high |
| 128.30.0.0/16 | Massachusetts Institute of Technology | ARIN | DIRECT ALLOCATION | ● high |
| 128.31.0.0/16 | Massachusetts Institute of Technology | ARIN | DIRECT ALLOCATION | ● high |
| 128.52.0.0/16 | Massachusetts Institute of Technology | ARIN | DIRECT ALLOCATION | ● high |
| 129.55.0.0/16 | Massachusetts Institute of Technology | ARIN | DIRECT ALLOCATION | ● high |
| 129.55.201.0/24 | Massachusetts Institute of Technology | BGP | ANNOUNCED | ● high |
| 192.5.135.0 – 192.5.141.255 | Massachusetts Institute of Technology | ARIN | DIRECT ALLOCATION | ● high |
| 192.5.136.0/22 | Massachusetts Institute of Technology | BGP | ANNOUNCED | ● high |
| 192.5.140.0/23 | Massachusetts Institute of Technology | BGP | ANNOUNCED | ● high |
| 192.12.11.0/24 | Massachusetts Institute of Technology | BGP | ANNOUNCED | ● high |
| 192.12.127.0/24 | Massachusetts Institute of Technology | ARIN | DIRECT ALLOCATION | ● high |
| 192.12.252.0/24 | Massachusetts Institute of Technology | ARIN | DIRECT ALLOCATION | ● high |
| 192.12.253.0/24 | Massachusetts Institute of Technology | ARIN | DIRECT ALLOCATION | ● high |
| 192.12.254.0/24 | Massachusetts Institute of Technology | ARIN | DIRECT ALLOCATION | ● high |
| 192.12.255.0/24 | Massachusetts Institute of Technology | ARIN | DIRECT ALLOCATION | ● high |
| 192.16.181.0/24 | Massachusetts Institute of Technology | ARIN | DIRECT ALLOCATION | ● high |
| 192.26.95.0/24 | Massachusetts Institute of Technology | ARIN | DIRECT ALLOCATION | ● high |
| 192.26.149.0/24 | Massachusetts Institute of Technology | ARIN | DIRECT ALLOCATION | ● high |
| 192.26.150.0/24 | Massachusetts Institute of Technology | ARIN | DIRECT ALLOCATION | ● high |
| 192.35.134.0/24 | Massachusetts Institute of Technology | ARIN | DIRECT ALLOCATION | ● high |
| 192.35.135.0/24 | Massachusetts Institute of Technology | ARIN | DIRECT ALLOCATION | ● high |
| 192.35.136.0/24 | Massachusetts Institute of Technology | ARIN | DIRECT ALLOCATION | ● high |
| 192.35.137.0/24 | Massachusetts Institute of Technology | ARIN | DIRECT ALLOCATION | ● high |
| 192.52.61.0/24 | Massachusetts Institute of Technology | ARIN | DIRECT ALLOCATION | ● high |
| 192.52.62.0/24 | Massachusetts Institute of Technology | ARIN | DIRECT ALLOCATION | ● high |
| 192.52.63.0/24 | Massachusetts Institute of Technology | ARIN | DIRECT ALLOCATION | ● high |
| 192.52.64.0/24 | Massachusetts Institute of Technology | ARIN | DIRECT ALLOCATION | ● high |
| 192.52.65.0/24 | Massachusetts Institute of Technology | ARIN | DIRECT ALLOCATION | ● high |
| 192.52.66.0/24 | Massachusetts Institute of Technology | ARIN | DIRECT ALLOCATION | ● high |
| 192.54.222.0/24 | Massachusetts Institute of Technology | ARIN | DIRECT ALLOCATION | ● high |
| 192.233.95.0/24 | Massachusetts Institute of Technology | ARIN | ASSIGNMENT | ● high |
| 2001:4830:2446::/48 | Massachusetts Institute of Technology | ARIN | ASSIGNMENT | ● high |
| 2603:4000::/24 | Massachusetts Institute of Technology | ARIN | DIRECT ALLOCATION | ● high |
| 18.0.0.0/16 | Massachusetts Institute of Technology | BGP | ANNOUNCED | ● low |
| 18.1.0.0/16 | Massachusetts Institute of Technology | BGP | ANNOUNCED | ● low |
| 18.3.0.0/16 | Massachusetts Institute of Technology | BGP | ANNOUNCED | ● low |
| 18.3.1.0/24 | Massachusetts Institute of Technology | BGP | ANNOUNCED | ● low |
| 18.3.2.0/24 | Massachusetts Institute of Technology | BGP | ANNOUNCED | ● low |
| 18.3.3.0/24 | Massachusetts Institute of Technology | BGP | ANNOUNCED | ● low |
| 18.3.4.0/24 | Massachusetts Institute of Technology | BGP | ANNOUNCED | ● low |
| 18.3.5.0/24 | Massachusetts Institute of Technology | BGP | ANNOUNCED | ● low |
| 18.3.6.0/24 | Massachusetts Institute of Technology | BGP | ANNOUNCED | ● low |
| 18.3.7.0/24 | Massachusetts Institute of Technology | BGP | ANNOUNCED | ● low |
| 18.3.8.0/24 | Massachusetts Institute of Technology | BGP | ANNOUNCED | ● low |
| 18.3.9.0/24 | Massachusetts Institute of Technology | BGP | ANNOUNCED | ● low |
| 18.3.10.0/24 | Massachusetts Institute of Technology | BGP | ANNOUNCED | ● low |
| 18.3.11.0/24 | Massachusetts Institute of Technology | BGP | ANNOUNCED | ● low |
| 18.3.12.0/24 | Massachusetts Institute of Technology | BGP | ANNOUNCED | ● low |
| 18.3.13.0/24 | Massachusetts Institute of Technology | BGP | ANNOUNCED | ● low |
| 18.3.14.0/24 | Massachusetts Institute of Technology | BGP | ANNOUNCED | ● low |
| 18.3.15.0/24 | Massachusetts Institute of Technology | BGP | ANNOUNCED | ● low |
| 18.3.16.0/24 | Massachusetts Institute of Technology | BGP | ANNOUNCED | ● low |
| 18.3.17.0/24 | Massachusetts Institute of Technology | BGP | ANNOUNCED | ● low |
| 18.3.18.0/24 | Massachusetts Institute of Technology | BGP | ANNOUNCED | ● low |
| 18.3.19.0/24 | Massachusetts Institute of Technology | BGP | ANNOUNCED | ● low |
| 18.3.20.0/24 | Massachusetts Institute of Technology | BGP | ANNOUNCED | ● low |
| 18.3.21.0/24 | Massachusetts Institute of Technology | BGP | ANNOUNCED | ● low |
| 18.3.22.0/24 | Massachusetts Institute of Technology | BGP | ANNOUNCED | ● low |
| 18.3.23.0/24 | Massachusetts Institute of Technology | BGP | ANNOUNCED | ● low |
| 18.3.28.0/24 | Massachusetts Institute of Technology | BGP | ANNOUNCED | ● low |
| 18.3.67.0/24 | Massachusetts Institute of Technology | BGP | ANNOUNCED | ● low |
| 18.3.69.0/24 | Massachusetts Institute of Technology | BGP | ANNOUNCED | ● low |
| 18.3.90.0/24 | Massachusetts Institute of Technology | BGP | ANNOUNCED | ● low |
| 18.3.103.0/24 | Massachusetts Institute of Technology | BGP | ANNOUNCED | ● low |
| 18.3.104.0/24 | Massachusetts Institute of Technology | BGP | ANNOUNCED | ● low |
| 18.3.105.0/24 | Massachusetts Institute of Technology | BGP | ANNOUNCED | ● low |
| 18.3.106.0/24 | Massachusetts Institute of Technology | BGP | ANNOUNCED | ● low |
| 18.3.108.0/24 | Massachusetts Institute of Technology | BGP | ANNOUNCED | ● low |
| 18.3.109.0/24 | Massachusetts Institute of Technology | BGP | ANNOUNCED | ● low |
| 18.3.111.0/24 | Massachusetts Institute of Technology | BGP | ANNOUNCED | ● low |
| 18.3.116.0/24 | Massachusetts Institute of Technology | BGP | ANNOUNCED | ● low |
| 18.3.122.0/24 | Massachusetts Institute of Technology | BGP | ANNOUNCED | ● low |
| 18.3.151.0/24 | Massachusetts Institute of Technology | BGP | ANNOUNCED | ● low |
| 18.3.152.0/24 | Massachusetts Institute of Technology | BGP | ANNOUNCED | ● low |
| 18.3.153.0/24 | Massachusetts Institute of Technology | BGP | ANNOUNCED | ● low |
| 18.3.154.0/24 | Massachusetts Institute of Technology | BGP | ANNOUNCED | ● low |
| 18.3.155.0/24 | Massachusetts Institute of Technology | BGP | ANNOUNCED | ● low |
| 18.4.0.0/16 | Massachusetts Institute of Technology | BGP | ANNOUNCED | ● low |
| 18.5.0.0/16 | Massachusetts Institute of Technology | BGP | ANNOUNCED | ● low |
| 18.6.0.0/16 | Massachusetts Institute of Technology | BGP | ANNOUNCED | ● low |
| 18.7.0.0/16 | Massachusetts Institute of Technology | BGP | ANNOUNCED | ● low |
| 18.7.23.0/24 | Massachusetts Institute of Technology | BGP | ANNOUNCED | ● low |
| 18.7.32.0/24 | Massachusetts Institute of Technology | BGP | ANNOUNCED | ● low |
| 18.7.34.0/24 | Massachusetts Institute of Technology | BGP | ANNOUNCED | ● low |
| 18.7.39.0/24 | Massachusetts Institute of Technology | BGP | ANNOUNCED | ● low |
| 18.7.40.0/24 | Massachusetts Institute of Technology | BGP | ANNOUNCED | ● low |
| 18.7.54.0/24 | Massachusetts Institute of Technology | BGP | ANNOUNCED | ● low |
| 18.7.80.0/24 | Massachusetts Institute of Technology | BGP | ANNOUNCED | ● low |
| 18.7.82.0/24 | Massachusetts Institute of Technology | BGP | ANNOUNCED | ● low |
| 18.7.84.0/24 | Massachusetts Institute of Technology | BGP | ANNOUNCED | ● low |
| 18.7.102.0/24 | Massachusetts Institute of Technology | BGP | ANNOUNCED | ● low |
| 18.7.108.0/24 | Massachusetts Institute of Technology | BGP | ANNOUNCED | ● low |
| 18.7.117.0/24 | Massachusetts Institute of Technology | BGP | ANNOUNCED | ● low |
| 18.7.118.0/24 | Massachusetts Institute of Technology | BGP | ANNOUNCED | ● low |
| 18.7.119.0/24 | Massachusetts Institute of Technology | BGP | ANNOUNCED | ● low |
| 18.7.120.0/24 | Massachusetts Institute of Technology | BGP | ANNOUNCED | ● low |
| 18.8.0.0/16 | Massachusetts Institute of Technology | BGP | ANNOUNCED | ● low |
| 18.9.0.0/16 | Massachusetts Institute of Technology | BGP | ANNOUNCED | ● low |
| 18.10.0.0/16 | Massachusetts Institute of Technology | BGP | ANNOUNCED | ● low |
| 18.11.0.0/16 | Massachusetts Institute of Technology | BGP | ANNOUNCED | ● low |
| 18.12.0.0/16 | Massachusetts Institute of Technology | BGP | ANNOUNCED | ● low |
| 18.13.0.0/16 | Massachusetts Institute of Technology | BGP | ANNOUNCED | ● low |
| 18.14.0.0/16 | Massachusetts Institute of Technology | BGP | ANNOUNCED | ● low |
| 18.15.0.0/16 | Massachusetts Institute of Technology | BGP | ANNOUNCED | ● low |
| 18.16.0.0/16 | Massachusetts Institute of Technology | BGP | ANNOUNCED | ● low |
| 18.17.0.0/16 | Massachusetts Institute of Technology | BGP | ANNOUNCED | ● low |
| 18.18.0.0/16 | Massachusetts Institute of Technology | BGP | ANNOUNCED | ● low |
| 18.22.0.0/16 | Massachusetts Institute of Technology | BGP | ANNOUNCED | ● low |
| 18.23.0.0/16 | Massachusetts Institute of Technology | BGP | ANNOUNCED | ● low |
| 18.25.0.0/16 | Massachusetts Institute of Technology | BGP | ANNOUNCED | ● low |
| 18.26.0.0/16 | Massachusetts Institute of Technology | BGP | ANNOUNCED | ● low |
| 18.27.0.0/16 | Massachusetts Institute of Technology | BGP | ANNOUNCED | ● low |
| 18.29.0.0/16 | Massachusetts Institute of Technology | BGP | ANNOUNCED | ● low |
| 18.31.0.0/16 | Massachusetts Institute of Technology | BGP | ANNOUNCED | ● low |
| 128.30.0.0/15 | Massachusetts Institute of Technology | BGP | ANNOUNCED | ● low |
| 2603:4000::/32 | Massachusetts Institute of Technology | BGP | ANNOUNCED | ● low |
| 2603:4001::/32 | Massachusetts Institute of Technology | BGP | ANNOUNCED | ● low |
| 2603:4007::/32 | Massachusetts Institute of Technology | BGP | ANNOUNCED | ● low |
| 2603:4008::/32 | Massachusetts Institute of Technology | BGP | ANNOUNCED | ● low |
| 2603:4009::/32 | Massachusetts Institute of Technology | BGP | ANNOUNCED | ● low |
| 2603:400a::/32 | Massachusetts Institute of Technology | BGP | ANNOUNCED | ● low |
| 2603:4010::/32 | Massachusetts Institute of Technology | BGP | ANNOUNCED | ● low |
| 2603:4011::/32 | Massachusetts Institute of Technology | BGP | ANNOUNCED | ● low |
IPv6 ranges (10)
Footprint over time
12 weekly snapshots · JSON
137
+23 netblocks since 2026-07-05
2026-07-05
peak 138
2026-09-13
Domains this organisation publishes
what's this?Other domains hosted in this network
what's this?Corporate group (2 confirmed entities)
Network trust
what's this?
RPKI hygiene: F
how networks compare →
1.5%
of checked blocks have valid RPKI ROA coverage
(2 of 137)
No discrepancies found among checked blocks.
NIC Handles
AS3
AS395326
AS396527
AS63
BROWN2958-ARIN
CSAIL-ARIN
GOMES41-ARIN
HAYST5-ARIN
HAYST5-ARIN
HAYST5-ARIN
MIT-1
MIT-2
+15 more