| ASN | AS397136 |
| Organization | F12-DC-EAST |
| RIR | ARIN |
| Country | 🇨🇦 CA |
| Registered | 2018-10-26 |
| Routing Status | ✅ Announced |
| IPv4 Prefixes | 2 |
| IPv6 Prefixes | 0 |
AS397136 is an Autonomous System Number (ASN) assigned to F12-DC-EAST. An ASN is a unique numerical identifier allocated to organizations that operate independently routed networks on the internet. Each autonomous system uses the Border Gateway Protocol (BGP) to exchange routing information with other networks, enabling data to traverse the global internet infrastructure.
F12-DC-EAST operates AS397136 to manage an actively announced set of IP address ranges. This autonomous system announces 2 IPv4 prefixes to the global routing table. AS397136 is registered under ARIN, one of the five Regional Internet Registries (RIRs) responsible for allocating IP addresses and ASNs worldwide. The ASN was registered on 2018-10-26.
An Autonomous System Number (ASN) is a globally unique identifier assigned by Regional Internet Registries (such as ARIN, RIPE NCC, APNIC, LACNIC, and AFRINIC) to organizations that need to exchange routing information on the internet. ASNs are essential to the Border Gateway Protocol (BGP), which is the protocol that connects all networks on the internet. Every ISP, cloud provider, enterprise network, and content delivery network (CDN) that peers with other networks needs at least one ASN. There are two types: 16-bit ASNs (0–65535) from the original allocation pool, and 32-bit ASNs (up to 4,294,967,295) introduced to meet growing demand.
Use ipaddress.ai to look up any ASN or IP address for free — no signup or API key required. Simply visit ipaddress.ai/AS{number} to view details about any autonomous system, including the organization name, announced IP prefixes, RIR, registration date, and routing status. You can also look up any IP address to find which ASN it belongs to.