ASN

(1) (Autonomous System Number) A unique identifier of an autonomous system on the Internet. Of the 65 thousand ASNs available, more than 30 thousand have been assigned to ISPs and NSPs. ISPs usually have only one ASN, but NSPs may have more than one. ASNs are maintained in the Routing Arbiter Database (RADB). See autonomous system, ISP and NSP.

(2) (Advance Ship Notice) A notice sent by the vendor to the customer indicating what merchandise has been shipped. It enables the receiver to identify a package's contents electronically without having to open it.

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ASN may mean:

• Abstract syntax notation
• Adobe Solutions Network
• Advanced Shipping Notice
• American Society for Nutrition
• American Society of Nephrology
• American Society of Neuroimaging
• The ticker symbol for Archstone-Smith Trust
• Asparagine
• Associate of Science in Nursing
• Associated Screen News of Canada
• The Association for the Study of Nationalities, an academic association devoted to the study of ethnicity and nationalism from Europe to Eurasia.
• Atlantic Satellite Network, a television channel in Atlantic Canada
• The second-level domain name asn.au, reserved for Australian associations and non-profit organisations
• The National Rail code for Addlestone railway station, United Kingdom.
• Autonomous System Number, a unique identifier for a collection of IP networks and routers under the control of one entity.
• Autorité de sûreté nucléaire, the French nuclear safety authority
• Aviation Safety Network
• Address Space Number, computer architecture term indicating a field that augments a cache or page table for use with multiple processes.

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