AS400653 University of Pennsylvania

UPENN-WHARTON-SF - University of Pennsylvania · registered in the United States

IPv4 addresses5121 prefixes · <0.001% of announced IPv4

Rank in United States#10,476largest network in US by IPv4 space, of 18,338 · <0.01% of US

Rank worldwide#49,436of 79,396 networks with IPv4

IPv61 x /481 prefixes

CountryUnited States18,679 ASNs registered there

Open AS400653 in ASN lookup Look up an IP in this network (165.123.192.1) All networks in United States

IPv4 prefixes

All 1 prefix, in address order.

165.123.192.0/23

IPv6 prefixes

All 1 prefix.

2607:f470:5000::/48

Other ASNs named University of Pennsylvania

2 other networks use the same organisation name; together with AS400653 they announce 262,656 IPv4 addresses.

ASNNameIPv4 addresses

AS55UPENN - University of Pennsylvania US261,888

AS69UPENN-NETWORK-LAB - University of Pennsylvania US256

Similar-sized networks in United States

ASNNameIPv4 addresses

AS400302#10473 AS-PIKNIK - PiKNiK & Company Inc.512

AS400458#10474 FEXTEL-DC - ViciDial Group512

AS400564#10475 WESTONREED - Weston Reed, Sole Proprietorship512

AS400659#10477 DAVEYGROUPLLC-ASN - Davey Group LLC512

AS400731#10478 VTS-SERVICES - VTS Services Inc512

AS401132#10479 BL-RUBI - BulletServers LLC512

IP-to-ASN data: iptoasn.com (public domain). Snapshot downloaded 2026-11-11, refreshed daily. Ranges are what each network announces in BGP, not registry allocations. Data sources