Q: What are MIT's IP ranges?
What IP addresses might you see at MIT ?
Answer
This article collects information from multiple sources and presents it on a single page as a convenience, but could be out of date or missing information. |
The ranges in the following table were compiled from a variety of locations, including ARIN data and an MIT Libraries page.
Range | CIDR Notation | ARIN Info | Organizational Entity |
---|---|---|---|
18.0.0.0 - 18.31.255.255 | 18.0.0.0/11 |
MIT-2 | Most of campus. Also see: Standard Building Subnets |
128.30.0.0 - 128.31.255.255 | 128.30.0.0/15 | MIT-2 | 128.30.0.0/16: Official CSAIL research activities (offices and servers in 32 and OC40) 128.31.0.0/16: Guest (i.e., non-CSAIL) activities hosted on the CSAIL network (in 32 and OC40) 128.31.4.0/22: Laboratory for Information and Decision Systems 128.31.16.0/24: EECS lounge and classroom in 32 basement |
128.52.0.0 - 128.52.255.255 | 128.52.0.0/16 | MIT-2 | CSAIL and non-CSAIL virtual machines in CSAIL's OpenStack cloud |
129.55.0.0 - 129.55.255.255 | 129.55.0.0/16 | MIT | Lincoln Laboratory, Lexington, MA |
192.52.61.0 - 192.52.66.255 | See note 2 below | MIT-7 | Haystack Observatory, Tyngsboro, MA |
198.125.160.0 - 198.125.163.255 | 198.125.160.0/22 | MITNS | ESnet* range used by LNS (Lab for Nuclear Science). |
198.125.176.0 - 198.125.191.255 | 198.125.176.0/20 | PSFC-1 | ESnet* range used by Plasma Science Fusion Center, on campus |
2603:4000:: - 2603:40ff:ffff:ffff:ffff:ffff:ffff:ffff | 2603:4000::/24 | MIT-2 | Most of campus as/when IPv6 is rolled out. |
*ESnet (Energy Sciences Network) is used by universities, research labs, national labs, etc.
Note 1: There are two separate ranges: 128.30.0.0/16 and 128.31.0.0/16.
Note 2: Haystack's IP range is actually 6 consecutive /24s. That is, 192.52.61.0/24, 192.52.62.0/24, 192.52.63.0/24, etc.
Woods Hole
Woods Hole Oceanographic Institution ("WHOI") has a long affiliation with MIT, and in some cases, their machines count as "on campus" (e.g. for access to outgoing-legacy.mit.edu), whereas in other cases they don't (access to some MIT Libraries digital resources). Users at Woods Hole who are unable to access certain digital resources on campus should try using the Remote Access VPN or contacting the administrators of that resource.
Woods Hole has the IP address range 128.128.0.0/16 (128.128.x.x http://whois.arin.net/rest/net/NET-128-128-0-0-1)
Remote Access VPN Address Pools
- 18.30.128.0/17
- 18.28.128.0/17
- 18.19.0.0/18 {when connected from MITnet}
Note: IP addresses assigned to devices that are connected to the Remote Access VPN from outside of MITnet (e.g. connected from a user's home network) will be NAT'd to a Prisma Access IP address (the IP of the VPN gateway) when communicating out to sites on the Internet. No NAT is applied when communicating with hosts/sites on MITnet.
Wi-Fi
- 10.29.0.0/16, 10.31.0.0/16 --
NAT--> 18.29.0.0/16 [MIT SECURE], [MIT] - 10.189.0.0/17 --
NAT--> 192.54.222.0/24 [MIT GUEST]
Note: Devices connected to the Wi-Fi networks are assigned an IP address, which will be NAT'd to the target range when communicating out to sites on the Internet (or to destinations on the "MIT GUEST" Wi-Fi network). No NAT is applied when communicating with hosts/sites on MITnet.
Campus Firewall NAT Pool
- 18.10.0.0/16
- 18.11.0.0/16
Note: The campus firewall NAT pool applies to any device on the MITnet wired (not Wi-Fi) networks assigned a 10.x.x.x IP address. When those devices communicate out to sites on the Internet, the 10-net IP address will be NAT'd to an IP within the campus firewall NAT pool. No NAT is applied when communicating with hosts/sites on MITnet.
4 Comments
comments.show.hideJun 29, 2018
Manny Santos
is there away we can link this KB article http://kb.mit.edu/confluence/x/CIMwCQ here?
Aug 06, 2019
Garrett A Wollman
128.52.0.0/16 should in the the same row as 128.30.0.0/15. These networks are used as follows:
Oct 30, 2020
Michael C. Tiernan
Sorry, does the statment
"IP address ranges in completed buildings will be as follows"
mean that the ranges as specified in "Standard Building Subnets" http://kb.mit.edu/confluence/display/istcontrib/Standard+Building+Subnets are null and void?
Nov 13, 2020
Brian Stephens
The "Standard Building Subnets" (which still apply) refer to the wired network as opposed to the Wi-Fi.