AS3 is the autonomous system of Massachusetts Institute of Technology. It holds 1,776,128 IPv4 addresses in 25 prefixes plus 1 IPv6 ranges, mainly in 
United States.
By IPv4 addresses the network ranks #221 worldwide and #62 of 18,202 networks in United States. That is 0.12% of the country’s IPv4 space.
The largest block is 18.8.0.0 to 18.18.255.255 with 720,896 addresses, geolocated to Cambridge (Area 2/MIT).
- IPv4 addresses
- 1,776,128
- IPv4 prefixes
- 25
- World rank
- #221
- Country share
- 0.12%
- IPv6 ranges
- 1
Addresses by country
- United States 100%
Largest blocks
- 18.8.0.0 Cambridge (Area 2/MIT)720,896
- 18.4.0.0 Cambridge (Area 2/MIT)227,584
- 18.25.0.0 Cambridge (Area 2/MIT)196,608
- 128.30.0.0 Cambridge (Area 2/MIT)131,072
- 18.22.0.0 Cambridge (Area 2/MIT)131,072
- 18.0.0.0 Cambridge (Area 2/MIT)131,072
- 128.52.0.0 Cambridge (Area 2/MIT)65,536
- 18.31.0.0 Cambridge (Area 2/MIT)65,536
Networks of similar size
1,805,312
1,785,856
1,782,016
1,777,664
1,773,056
1,771,008
1,770,496
1,752,576IPv4 prefixes
- 18.0.0.0/15
- 18.3.0.0/17
- 18.3.128.0/20
- 18.3.144.0/21
- 18.3.152.0/22
- 18.4.0.0/15
- 18.6.0.0/16
- 18.7.0.0/18
- 18.7.64.0/19
- 18.7.96.0/20
- 18.7.112.0/21
- 18.7.120.0/24
- 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
- 128.30.0.0/15
- 128.52.0.0/16
- 192.52.61.0/24
- 192.52.62.0/23
- 192.52.64.0/23
Questions and answers
Who owns AS3?
Autonomous system AS3 is operated by Massachusetts Institute of Technology.
How many IP addresses does AS3 have?
The network holds 1,776,128 IPv4 addresses in 25 prefixes, plus 1 IPv6 ranges.
Which country is AS3 in?
The main country is United States.
How big is AS3?
By IPv4 addresses it ranks #221 worldwide.
What is the largest address block of AS3?
18.8.0.0 to 18.18.255.255, 720,896 addresses.