All ASNs

Autonomous System details for AS27

AS27

University of Maryland • umd.edu

AS27 — University of Maryland

AS Name

UMDNET

Country

United States (US)

Website

umd.edu

Number of IPv4

134,656

Number of IPv6

7.25 × 10²⁴

ASN type

Education

Status

Assigned

Registry

ARIN

Allocated

August 28, 1984

Last updated

February 18, 2014

IP Ranges

5 IPv4 prefixes, 6 IPv6 prefixes

Prefix	Company	Number of IPs
128.8.0.0/16	University of Maryland	65,536
129.2.0.0/16	University of Maryland	65,536
192.54.94.0/23	University of Maryland	512
192.54.96.0/21	University of Maryland	2,048
192.54.100.0/22	University of Maryland	1,024
2605:880::/48	University of Maryland	1.21 × 10²⁴
2605:880:1::/48	University of Maryland	1.21 × 10²⁴
2605:880:10::/48	University of Maryland	1.21 × 10²⁴
2605:880:20::/48	University of Maryland	1.21 × 10²⁴
2605:880:22::/48	University of Maryland	1.21 × 10²⁴
2605:880:30::/48	University of Maryland	1.21 × 10²⁴

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 AS27

0 peers

AS27 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 AS27

2 upstreams

AS10886 AS270026

AS27 uses these Autonomous Systems as its upstreams.

An upstream (or transit provider) is another AS that AS27 pays for full internet connectivity, allowing it to reach all global destinations and be reachable by them.

Downstreams of AS27

0 downstreams

AS27 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.