IP to ASN Mapping Service

https://team-cymru.com/community-services/ip-asn-mapping

This Go Module supports bulk queries to the Team Cymru IP ASN Mapping Service.

Description

Using this module you can submit IPv4, IPv6 or ASN's and get BGP data.

Go Doc

https://pkg.go.dev/github.com/chrispassas/ipasn

Example - Lookup using whois protocol

package main

import (
	"context"
	"log"

	"github.com/chrispassas/ipasn"
)

func main() {
	log.SetFlags(log.Ldate | log.Lmicroseconds | log.Lshortfile)

	var values = []string{
		"1.1.1.0/24",
		"8.8.8.8",
		"9.9.9.9",
		"AS13335",
		"2001:0db8:85a3:0000:0000:8a2e:0370:7334",
	}
	var results []ipasn.Result
	var err error
	if results, err = ipasn.BulkSearch(context.Background(), values); err != nil {
		log.Fatalf("ipasn.Search() error:%v", err)
	}

	for _, r := range results {
		log.Printf("----------------------")
		log.Printf("asn:%d", r.ASN)
		log.Printf("asname:%s", r.ASName)
		log.Printf("allocated:%s", r.Allocated)
		log.Printf("prefix:%s", r.BGPPrefix)
		log.Printf("cc:%s", r.CC)
		log.Printf("registry:%s", r.Registry)
	}
}

Example - Lookup using dns

package main

import (
	"context"
	"log"

	"github.com/chrispassas/ipasn"
)

func main() {
	log.SetFlags(log.Ldate | log.Lmicroseconds | log.Lshortfile)

	var values = []string{
		"1.1.1.0/24",
		"8.8.8.8",
		"9.9.9.9",
		"2001:0db8:85a3:0000:0000:8a2e:0370:7334",
	}

	for _, v := range values {
		var r ipasn.Result
		if r, err = ipasn.SearchByIPString(context.Background(), v); err != nil {
			log.Fatalf("ipasn.Search() error:%v", err)
		}

		log.Printf("----------------------")
		log.Printf("asn:%d", r.ASN)
		log.Printf("asname:%s", r.ASName)
		log.Printf("allocated:%s", r.Allocated)
		log.Printf("prefix:%s", r.BGPPrefix)
		log.Printf("cc:%s", r.CC)
		log.Printf("registry:%s", r.Registry)
		log.Printf("ip:%s", r.IP)
	}
}

Example - Lookup ASN using dns

package main

import (
	"context"
	"log"

	"github.com/chrispassas/ipasn"
)

func main() {
	log.SetFlags(log.Ldate | log.Lmicroseconds | log.Lshortfile)
	var r ipasn.Result
	var err error
	if r, err = ipasn.SearchByIPString(context.Background(), 23028, true); err != nil {
		log.Fatalf("ipasn.Search() error:%v", err)
	}

	log.Printf("----------------------")
	log.Printf("asn:%d", r.ASN)
	log.Printf("asname:%s", r.ASName)
	log.Printf("allocated:%s", r.Allocated)
	log.Printf("prefix:%s", r.BGPPrefix)
	log.Printf("cc:%s", r.CC)
	log.Printf("registry:%s", r.Registry)
	log.Printf("ip:%s", r.IP)
}