ISP Number Lookup
Enter a domain or IP address to get the ASN (ISP number), Internet Service Provider (ISP), and the associated country.
Search ISP Number
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Search Results
- IP Address: {{ result.ip }}
- Internet Service Provider (ISP): {{ result.isp }}
- ASN (ISP number): {{ result.asn }}
- Country: {{ result.country }}
What is an ISP Number?
The "ISP number" commonly searched by users actually refers to the Autonomous System Number (ASN) assigned to an Internet Service Provider (ISP). Every ISP operating a network on the Internet has one or more registered ASNs.
What is an ASN?
An ASN (Autonomous System Number) is a unique identifier that allows an ISP to manage its network and route Internet traffic. ASNs are assigned by regional registry organizations such as RIPE, ARIN, APNIC, among others.
How to find my ISP number?
With this tool, you can enter any domain or IP address and instantly find out the ISP name and its associated ASN, completely free of charge.