AS22644 — TJUH

AS22644 announces 4 IPv4 prefixes covering 61,440 addresses and 10 IPv6 prefixes.

About this network

The AS handle TJUH is held by Thomas Jefferson University Hospitals, Inc.

What it's used for

• The address space carries internal corporate infrastructure for a major academic medical center, evidenced by netnames TJU and registrants Thomas Jefferson University across all announced IPv4 prefixes.
• The AS announces 61,440 IPv4 addresses and 11 IPv6 prefixes while maintaining only 4 observed neighbours, a ratio that indicates an internal corporate estate with site-by-site segmentation rather than an access or transit network.

Notable

• All RDAP registrants for the largest prefixes are Thomas Jefferson University, which aligns with the registry holder Thomas Jefferson University Hospitals, Inc.
• In 2014, Jefferson Health System was dissolved, and Thomas Jefferson University Hospitals rebranded as Jefferson Health, the current multi-state non-profit health system.
• The IPv4 inventory consists of four contiguous blocks within the 147.140.0.0/16 range, while the IPv6 inventory is finely subdivided into ten distinct prefixes under the 2605:2c0::/32 space.

This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy.

Announced prefixes

• 147.140.0.0/18
• 147.140.80.0/20
• 147.140.96.0/19
• 147.140.128.0/17
• 2605:2c0::/47
• 2605:2c0:1000::/47
• 2605:2c0:3000::/40
• 2605:2c0:4000::/35
• 2605:2c0:5008::/47
• 2605:2c0:6000::/47
• 2605:2c0:6010::/48
• 2605:2c0:6100::/47
• 2605:2c0:6110::/48
• 2605:2c0:6200::/39

Upstream networks

• AS46887 Crown Castle Fiber LLC
• AS399855 Keystone REN, LLC
• AS174 Cogent Communications, LLC
• AS33659 Comcast Cable Communications, LLC

Adjacent networks

• AS46887 Crown Castle Fiber LLC
• AS399855 Keystone REN, LLC
• AS174 Cogent Communications, LLC
• AS33659 Comcast Cable Communications, LLC