Harvard University operates AS1742: 9 IPv4 prefixes covering 203,520 addresses, most of them in 
United States.
By IPv4 addresses the network ranks #1,051 worldwide and #304 of 18,202 networks in United States. That is 0.01% of the country’s IPv4 space.
The largest block is 140.247.0.0 to 140.247.255.255 with 65,536 addresses, geolocated to Cambridge (Cambridgeport).
- IPv4 addresses
- 203,520
- IPv4 prefixes
- 9
- World rank
- #1,051
- Country share
- 0.01%
- IPv6 ranges
- 3
Addresses by country
- United States 100%
Largest blocks
- 140.247.0.0 Cambridge (Cambridgeport)65,536
- 131.142.0.0 Cambridge (Neighborhood Nine)65,536
- 128.103.0.0 Cambridge (Cambridgeport)65,536
- 65.112.0.0 Boston (Downtown)4,096
- 199.94.60.0 Cambridge (Cambridgeport)1,024
- 67.134.204.0 Boston (Downtown)1,024
- 192.131.102.0 Cambridge (Cambridgeport)256
- 192.54.223.0 Cambridge (Cambridgeport)256
Networks of similar size
- AS1897 NOS COMUNICACOES, S.A.
204,032 - AS23563 SK Broadband Co Ltd
203,776 - AS39608 Lanet Network Ltd
203,776 - AS56736 VASTRA GOTALANDS LANS LANDSTING
203,776 - AS40788 Start Communications
203,264 - AS36850 University of North Carolina at Chapel Hill203,264
- AS19399 Region Stockholm203,008
- AS200656 Nokia Solutions and Networks Oy
202,752
IPv4 prefixes
Questions and answers
Who owns AS1742?
Autonomous system AS1742 is operated by Harvard University.
How many IP addresses does AS1742 have?
The network holds 203,520 IPv4 addresses in 9 prefixes, plus 3 IPv6 ranges.
Which country is AS1742 in?
The main country is United States.
How big is AS1742?
By IPv4 addresses it ranks #1,051 worldwide.
What is the largest address block of AS1742?
140.247.0.0 to 140.247.255.255, 65,536 addresses.