How To Find As Number From Ip

Check an Autonomous System Number (ASN) for IP prefixes (subnets) or lookup an IP accost (IPv4 or IPv6) to become details of the As.

To search all ASN's belonging to an arrangement, just enter a text search string.

ASN Query Format

Perform ASN lookups as shown in the examples below. Enter either equally a unmarried query, a list (IP's or As Numbers) or a comma separated listing.

Lookup 1 of more IP's

Single query or a list
9.9.ix.9
8.8.8.8
Comma separated
one.1.1.1,eight.8.4.four

Lookup one or more than AS Numbers

Single query or a list
AS15169
3333
Comma separated
15169,3333

Search for As Names

Search unmarried queries only
Instance:

TESLA

What is an Autonomous Organisation (As)

The Internet is made up of Democratic Systems, these are collections of IP routing prefixes that let Cyberspace connected systems to communicate with each other. Without this routing the Net simply would not work.

Use this tool to place the registered possessor of an IP range, in that the system owner that contains the IP address. Continue in heed that there is no direct correlation between the IP address location from the ASN and geolocation. Many organisations accept Autonomous Systems that span continents; if an IP address is plant in an As based in the United States, this does non necessarily mean the IP address is on a system physically located inside the United states.

The ASN search tool found here is for quick lookups of an IP accost or Autonomous System Number (ASN). Using the Free version of the tool has a limit of 50 lookups a day; this includes apply of the other IP Tools that HackerTarget.com has made available.

IPv6 ASN Lookup

An ASN tin can be made upwards of IPv4 and IPv6 prefixes. Our tool will show all prefixes within the ASN including IPv6 network ranges. Querying an IPv6 address with the tool will show the ASN that the address belongs to.

When using the ASN search to query a list of IP addresses you are able to mix IPv4 and IPv6 addresses within the 1 query.

ASN Majority Lookup

Non-members can use the form above to enter up to 20 IP addresses or AS numbers to query. Results can be exported to XLSX for inclusion in your security reports or other tools.

ASN Lookup Limits

	FREE USER	Membership
Queries / day	l	500 - 20000 # based on plan
Max Query Size	20	12000

With a membership query up to 12000 IP addresses at once. A gilt mine of data for security analysts, network defenders and other cyber security professionals.

To use the API run across the details beneath, the API is only configured for single queries.

ASN Lookup API

This tool is built on a simple API that we have provided to the public. No signup or keys are required, simply query the API and go your results. If you wish to use more than the fifty queries per day quota Remove limits with a Full Membership..

Using the ASN API is a elementary matter of querying the following URL with an IP address, or ASN, appended to the "q" parameter. Come across below for an example. You tin can put this URL into a browser, apply curl, or a scripting linguistic communication such equally php, python, or ruby to brand the HTTP request. If you are looking up an ASN ensure the format is as shown in the second example.

roll https://api.hackertarget.com/aslookup/?q=one.one.1.1
roll https://api.hackertarget.com/aslookup/?q=AS15169

Checking a List

Using the API querying the Equally of a list of IP address is easily achieved with simple scripting.

while read line; exercise curl https://api.hackertarget.com/aslookup/?q=$line washed < ipaddress-listing.txt

Other BGP Resources

If you lot crave more detail regarding the BGP routing of an Autonomous System, the Shadow Server Projection has an first-class query tool available using DNS or Whois. In that location is also a Python module available for querying the service.

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