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AS3 Massachusetts Institute of Technology

MIT-GATEWAYS - Massachusetts Institute of Technology · registered in the United States

IPv4 addresses1,836,28796 prefixes · 0.059% of announced IPv4
Rank in United States#63largest network in US by IPv4 space, of 18,338 · 0.13% of US
Rank worldwide#210of 79,396 networks with IPv4
IPv69 x /32 (589,824 x /48)6 prefixes
CountryUnited States18,679 ASNs registered there
Open AS3 in ASN lookup Look up an IP in this network (18.0.0.1) All networks in United States

IPv4 prefixes

All 96 prefixes, in address order.

  • 18.0.0.0/15
  • 18.3.0.0/20
  • 18.3.16.0/21
  • 18.3.24.0/22
  • 18.3.28.0/24
  • 18.3.29.0/24
  • 18.3.30.0/23
  • 18.3.32.0/19
  • 18.3.64.0/22
  • 18.3.68.0/23
  • 18.3.70.0/23
  • 18.3.72.0/21
  • 18.3.80.0/21
  • 18.3.88.0/23
  • 18.3.90.0/24
  • 18.3.91.0/24
  • 18.3.92.0/22
  • 18.3.96.0/20
  • 18.3.112.0/22
  • 18.3.116.0/24
  • 18.3.117.0/24
  • 18.3.118.0/23
  • 18.3.120.0/23
  • 18.3.122.0/24
  • 18.3.123.0/24
  • 18.3.124.0/22
  • 18.3.128.0/20
  • 18.3.144.0/21
  • 18.3.152.0/22
  • 18.3.156.0/22
  • 18.3.160.0/19
  • 18.3.192.0/18
  • 18.4.0.0/15
  • 18.6.0.0/16
  • 18.7.0.0/20
  • 18.7.16.0/21
  • 18.7.24.0/21
  • 18.7.32.0/24
  • 18.7.33.0/24
  • 18.7.34.0/24
  • 18.7.35.0/24
  • 18.7.36.0/22
  • 18.7.40.0/21
  • 18.7.48.0/22
  • 18.7.52.0/23
  • 18.7.54.0/24
  • 18.7.55.0/24
  • 18.7.56.0/21
  • 18.7.64.0/20
  • 18.7.80.0/24
  • 18.7.81.0/24
  • 18.7.82.0/24
  • 18.7.83.0/24
  • 18.7.84.0/24
  • 18.7.85.0/24
  • 18.7.86.0/23
  • 18.7.88.0/21
  • 18.7.96.0/22
  • 18.7.100.0/23
  • 18.7.102.0/24
  • 18.7.103.0/24
  • 18.7.104.0/22
  • 18.7.108.0/24
  • 18.7.109.0/24
  • 18.7.110.0/23
  • 18.7.112.0/20
  • 18.7.128.0/17
  • 18.8.0.0/13
  • 18.16.0.0/15
  • 18.18.0.0/16
  • 18.22.0.0/15
  • 18.25.0.0/16
  • 18.26.0.0/15
  • 18.29.0.0/16
  • 18.31.0.0/16
  • 128.30.0.0/16
  • 128.31.0.0/27
  • 128.31.0.32/30
  • 128.31.0.36/31
  • 128.31.0.38/32
  • 128.31.0.40/29
  • 128.31.0.48/28
  • 128.31.0.64/26
  • 128.31.0.128/25
  • 128.31.1.0/24
  • 128.31.2.0/23
  • 128.31.4.0/22
  • 128.31.8.0/21
  • 128.31.16.0/20
  • 128.31.32.0/19
  • 128.31.64.0/18
  • 128.31.128.0/17
  • 128.52.0.0/16
  • 192.52.61.0/24
  • 192.52.62.0/23
  • 192.52.64.0/23

IPv6 prefixes

All 6 prefixes.

  • 2603:4000::/31
  • 2603:4007::/32
  • 2603:4008::/31
  • 2603:400a::/32
  • 2603:4010::/31
  • 2804:35c8::/32

Other ASNs named Massachusetts Institute of Technology

3 other networks use the same organisation name; together with AS3 they announce 1,904,639 IPv4 addresses.

ASNNameIPv4 addresses
AS63LL-MI - Massachusetts Institute of Technology US67,584
AS396527MIT-PUBWIFI - Massachusetts Institute of Technology US768
AS395326MIT-V6 - Massachusetts Institute of Technology USIPv6 only

Similar-sized networks in United States

ASNNameIPv4 addresses
AS5972#60 DNIC-ASBLK-05800-06055 - United States Department of Defense (DoD)1,865,472
AS270#61 AS270 - National Aeronautics and Space Administration1,859,328
AS33668#62 CMCS - Comcast Cable Communications, LLC1,857,536
AS4181#64 TDS-AS - TDS TELECOM1,806,592
AS33652#65 CMCS - Comcast Cable Communications, LLC1,759,744
AS20214#66 COMCAST-20214 - Comcast Cable Communications, LLC1,720,832

IP-to-ASN data: iptoasn.com (public domain). Snapshot downloaded 2026-11-11, refreshed daily. Ranges are what each network announces in BGP, not registry allocations. Data sources