ipasn

Documentation

Overview

Package ipasn provides fast IP to ASN lookup using embedded binary data generated from MaxMind GeoLite2-ASN.

Default builds embed raw binary data. Build with -tags ipasn_gzip to embed gzipped data and decompress at init time.

Index

• type ASN
  • func IPLookup(ip netip.Addr) ASN
  • func Lookup(ip net.IP) ASN

Types

type ASN

type ASN struct {
	Number uint32 // e.g. 13335
	Org    string // e.g. "Cloudflare, Inc."
}

ASN represents an autonomous-system record.

func IPLookup

func IPLookup(ip netip.Addr) ASN

IPLookup returns the ASN for the given netip.Addr. Zero value if not found.

func Lookup

func Lookup(ip net.IP) ASN

Lookup returns the ASN for the given net.IP. Zero value if not found.