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--- ubuntu:network:configuration:ip_to_asn_mapping [2020/08/19 14:41] – created 192.168.1.1
+++ ubuntu:network:configuration:ip_to_asn_mapping [2021/01/08 12:00] (current) – removed peter
@@ Line 1: / Line 1: @@
-====== Ubuntu - Network - Configuration - IP to ASN Mapping ======
-The ASN (Autonomous System Number) is a globally unique number assigned by a registrar for the purposes of Internet routing, To determine this issue the following command:
-**NOTE**:  The date and time part of the query is for the date / time you want to query.
-<code bash>
-whois -h whois.cymru.com " -v 5.42.134.35 2010-05-12 12:00:01 GMT"
-</code>
-returns:
-<code bash>
-AS      | IP               | BGP Prefix          | CC | Registry | Allocated  | Info                    | AS Name
-    | 5.42.134.35      | 5.42.132.0/22       | GB | ripencc  | 2012-05-16 | 2010-05-12 12:00:01 GMT | , GB
-</code>
-To query for some basic AS information directly:
-<code bash>
-whois -h whois.cymru.com " -v AS8680"
-</code>
-returns:
-<code bash>
-AS      | CC | Registry | Allocated  | AS Name
-    | GB | ripencc  |            | , GB
-</code>
-----
-===== References =====
-  * https://asn.cymru.com/
-  * https://www.ultratools.com/tools/asnInfoResult?domainName=8.8.8.8