AS21992 — SSHA-ONE-ASN

AS21992 announces 18 IPv4 prefixes covering 19,968 addresses and 0 IPv6 prefixes.

About this network

The AS handle SSHA-ONE-ASN is held by Ontario Health.

What it's used for

• The address space carries internal corporate infrastructure for the provincial health sector, evidenced by netnames SSHA-ONE-NETWORK and TRILLIUM-HEALTH-PARTNERS and registrants including Ontario Health, OH NOC, and OHCSO.
• The AS announces 19,968 IPv4 addresses across 18 prefixes with only 2 observed neighbours, a ratio indicative of an internal corporate estate with site-by-site segmentation rather than a transit or access network.

Notable

• Registrants largely align with the announcer, with Ontario Health and its NOC/CSO entities holding the majority of the space, while Trillium Health Partners holds the 205.210.180.0/22 block.
• The inventory consists of 18 IPv4 prefixes with no IPv6 announcements, featuring a mix of /20, /21, /22, /23, and /24 blocks primarily within the 76.75.0.0/16 range.

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

Announced prefixes

• 69.42.176.0/20
• 76.75.128.0/20
• 76.75.144.0/22
• 76.75.148.0/24
• 76.75.151.0/24
• 76.75.152.0/23
• 76.75.154.0/24
• 76.75.156.0/22
• 76.75.160.0/23
• 76.75.163.0/24
• 76.75.164.0/22
• 76.75.168.0/21
• 76.75.176.0/23
• 76.75.178.0/24
• 76.75.180.0/23
• 76.75.184.0/21
• 199.212.118.0/24
• 205.210.180.0/22

Upstream networks

• AS19752 Hydro One Telecom Inc.

Downstream networks

• AS32364 Ontario Health

Adjacent networks

• AS19752 Hydro One Telecom Inc.
• AS32364 Ontario Health