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ASN Assignments

Autonomous System Number (ASN) allocations from IANA by Regional Internet Registry.

AS rangeDescriptionRegistryDate
0Reserved-
1-1876Assigned by ARINARIN
1877-1901Assigned by RIPE NCCRIPE
1902-2042Assigned by ARINARIN
2043Assigned by RIPE NCCRIPE
2044-2046Assigned by ARINARIN
2047Assigned by RIPE NCCRIPE
2048-2106Assigned by ARINARIN
2107-2136Assigned by RIPE NCCRIPE
2137-2584Assigned by ARINARIN
2585-2614Assigned by RIPE NCCRIPE
2615-2772Assigned by ARINARIN
2773-2822Assigned by RIPE NCCRIPE
2823-2829Assigned by ARINARIN
2830-2879Assigned by RIPE NCCRIPE
2880-3153Assigned by ARINARIN
3154-3353Assigned by RIPE NCCRIPE
3354-4607Assigned by ARINARIN
4608-4865Assigned by APNICAPNIC
4866-5376Assigned by ARINARIN
5377-5631Assigned by RIPE NCCRIPE
5632-6655Assigned by ARINARIN
6656-6911Assigned by RIPE NCCRIPE
6912-7466Assigned by ARINARIN
7467-7722Assigned by APNICAPNIC
7723-8191Assigned by ARINARIN
8192-9215Assigned by RIPE NCCRIPE
9216-10239Assigned by APNICAPNIC
10240-12287Assigned by ARINARIN
12288-13311Assigned by RIPE NCCRIPE
13312-15359Assigned by ARINARIN
15360-16383Assigned by RIPE NCCRIPE
16384-17407Assigned by ARINARIN
17408-18431Assigned by APNICAPNIC
18432-20479Assigned by ARINARIN
20480-21503Assigned by RIPE NCCRIPE
21504-23455Assigned by ARINARIN
23456AS_TRANS-
23457-23551Assigned by ARINARIN
23552-24575Assigned by APNICAPNIC
24576-25599Assigned by RIPE NCCRIPE
25600-26623Assigned by ARINARIN2002-03
26624-27647Assigned by ARINARIN2002-09
27648-28671Assigned by LACNICLACNIC2002-11
28672-29695Assigned by RIPE NCCRIPE2002-12
29696-30719Assigned by ARINARIN2003-03
30720-31743Assigned by RIPE NCCRIPE2003-09
31744-32767Assigned by ARINARIN2003-11
32768-33791Assigned by ARINARIN2004-05
33792-34815Assigned by RIPE NCCRIPE2004-06
34816-35839Assigned by RIPE NCCRIPE2005-02
35840-36863Assigned by ARINARIN2005-02
36864-37887Assigned by AFRINICAFRINIC2005-04
37888-38911Assigned by APNICAPNIC2005-06
38912-39935Assigned by RIPE NCCRIPE2005-09
39936-40959Assigned by ARINARIN2006-03-29
40960-41983Assigned by RIPE NCCRIPE2006-04-13
41984-43007Assigned by RIPE NCCRIPE2006-11-17
43008-44031Assigned by RIPE NCCRIPE2007-04-23
44032-45055Assigned by RIPE NCCRIPE2007-09-14
45056-46079Assigned by APNICAPNIC2007-10-11
46080-47103Assigned by ARINARIN2008-03-27
47104-48127Assigned by RIPE NCCRIPE2008-04-07
48128-49151Assigned by RIPE NCCRIPE2008-09-09
49152-50175Assigned by RIPE NCCRIPE2009-03-06
50176-51199Assigned by RIPE NCCRIPE2009-03-06
51200-52223Assigned by RIPE NCCRIPE2009-03-06
52224-53247Assigned by LACNICLACNIC2009-03-11
53248-54271Assigned by ARINARIN2009-04-21
54272-55295Assigned by ARINARIN2009-04-21
55296-56319Assigned by APNICAPNIC2009-09-02
56320-57343Assigned by RIPE NCCRIPE2011-01-04
57344-58367Assigned by RIPE NCCRIPE2011-01-04
58368-59391Assigned by APNICAPNIC2011-08-09
59392-60415Assigned by RIPE NCCRIPE2012-03-21
60416-61439Assigned by RIPE NCCRIPE2012-03-21
61440-61951Assigned by LACNICLACNIC2013-06-11
61952-62463Assigned by RIPE NCCRIPE2013-09-09
62464-63487Assigned by ARINARIN2013-05-30
63488-63999Assigned by APNICAPNIC2013-09-11
64000-64098Assigned by APNICAPNIC2014-09-02
64099-64197Assigned by LACNICLACNIC2014-09-05
64198-64296Assigned by ARINARIN2015-04-29
64297-64395Assigned by APNICAPNIC2016-05-25
64396-64495Assigned by RIPE NCCRIPE2016-07-29
64496-64511Reserved for use in documentation and sample code-2008-12-03
64512-65534Reserved for Private Use-
65535Reserved-

About ASN Assignments

Autonomous System Number (ASN) allocations from IANA by Regional Internet Registry.

ASN Assignments inspects network details from your browser — enter a host, address or URL and get clear, readable results without touching the command line.

How to Use ASN Assignments

  1. Enter the host, IP address, URL or port you want to inspect.
  2. Choose any options the tool offers (protocol, count, depth).
  3. Run the check — results appear as the browser completes the request.
  4. Copy the report or note down the details you need.

Key Features

  • No terminal or admin tools needed — everything happens in the page.
  • Clear, readable results instead of raw command output.
  • Checks run from your browser, reflecting what a real visitor experiences.

Frequently Asked Questions

Does ASN Assignments really check the network?

Yes — ASN Assignments uses browser-based requests and lookups to test reachability the way a real visitor would experience it.

Is ASN Assignments free to use?

Yes. ASN Assignments is completely free with unlimited use — no account, download or payment required.

Is my data uploaded to a server?

No. ASN Assignments runs entirely in your browser. Your inputs are never sent to our servers or stored anywhere.

Does ASN Assignments work on mobile?

Yes. The interface is fully responsive and works in any modern browser on Android, iPhone, tablets and desktops.

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