128.30.51.37
IPv4 address
128.30.51.37
An address in Cambridge, Massachusetts, United States, announced by Massachusetts Institute of Technology (AS3). It's a web server on ports 80 and 443.
Summary
Geolocation
Where the address is, and what that place uses.
- City
- Cambridge
- Region
- Massachusetts
- Postal code
- 02138
- Country
- United States
- Continent
- North America
- Coordinates
- 42.3751, -71.1056
- Timezone
- America/New_York
Ownership
Who holds the address: the AS announcing it, the registry record, the abuse contact and its name in DNS.
- Company
- Massachusetts Institute of Technology
- Domain
- mit.edu
- Type
- Education
- Registered in
- United States
- AS number
- AS3
- Name
- Massachusetts Institute of Technology
- Prefix
- 128.30.0.0/15
- RPKI
- Not found
- Type
- Education
- Domain
- mit.edu
- Registered in
- United States
- Name
- Massachusetts Institute of Technology
- Network name
- MIT-NET
- Organization
- MIT-2
- Status
- allocation
- Registry
- ARIN
- Domain
- mit.edu
- Name
- Network security
- Phone
- +1-617-253-8304
- Address
- 32 Vassar Street, Room 32-276, Cambridge, MA, 02139
- Network
- 128.30.0.0-128.30.255.255
Not seen inIP RWHOIS
Anonymity
Whether the address hides someone else: a VPN, Tor, a relay, a proxy pool, or a hosting range.
Network
What kind of network it is on: a mobile carrier, a satellite operator, an anycast service, a CDN edge.
Services
What our own internet-wide measurement found listening on it.
- 80 status
- 301
- 80 redirect
- https://128.30.51.37/
- 80 server
- nginx/1.30.4
- 80 title
- 301 Moved Permanently
- 80 seen
- 2026-07-29 to 2026-10-20
- 443 status
- 301
- 443 redirect
- https://theias.place
- 443 server
- nginx/1.30.4
- 443 title
- 301 Moved Permanently
- 443 TLS
- TLSv1.3
- 443 certificate
- p2p.theias.place
- 443 issuer
- C=US, O=Let's Encrypt, CN=YE2
- 443 browser-trusted
- Yes
- 443 seen
- 2026-07-28 to 2026-10-18
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