All ASNs

Autonomous System details for AS5653

AS5653

University of California San Francisco • ucsf.edu

AS5653 — University of California San Francisco

AS Name

UCSF

Country

United States (US)

Website

ucsf.edu

Number of IPv4

200,704

Number of IPv6

ASN type

Education

Status

Assigned

Registry

ARIN

Allocated

July 27, 1995

Last updated

February 26, 2026

IP Ranges

19 IPv4 prefixes

Prefix	Company	Number of IPs
64.54.0.0/16	University of California San Francisco	65,536
64.54.4.0/24	University of California San Francisco	256
64.54.6.0/24	University of California San Francisco	256
64.54.9.0/24	University of California San Francisco	256
64.54.17.0/24	University of California San Francisco	256
64.54.18.0/24	University of California San Francisco	256
64.54.128.0/24	University of California San Francisco	256
64.54.149.0/24	University of California San Francisco	256
64.54.162.0/24	University of California San Francisco	256
64.54.192.0/24	University of California San Francisco	256
64.54.193.0/24	University of California San Francisco	256
64.54.195.0/24	University of California San Francisco	256
64.54.196.0/24	University of California San Francisco	256
64.54.197.0/24	University of California San Francisco	256
64.54.201.0/24	University of California San Francisco	256
64.54.202.0/24	University of California San Francisco	256
128.218.0.0/16	University of California San Francisco	65,536
169.230.0.0/16	University of California San Francisco	65,536
169.230.239.0/24	University of California San Francisco	256

IP ranges are the different blocks of IP addresses advertised by an Autonomous System (AS). These ranges can be used by the same organization operating the AS, or by different organizations.

Peers of AS5653

0 peers

AS5653 has no peers recorded.

Peering is a direct, often free, traffic exchange between Autonomous Systems (ASNs). They share routes only to their own networks and customers, making connections faster and cheaper for that specific traffic, without providing full internet access to each other.

Upstreams of AS5653

2 upstreams

AS2152 AS2153

AS5653 uses these Autonomous Systems as its upstreams.

An upstream (or transit provider) is another AS that AS5653 pays for full internet connectivity, allowing it to reach all global destinations and be reachable by them.

Downstreams of AS5653

0 downstreams

AS5653 has no downstreams recorded.

A downstream is a customer Autonomous System that pays another AS (its provider) for internet access. The provider AS carries the downstream's traffic and makes its network reachable.