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{{Short description|IP address block for route aggregation}}
'''Provider Aggregatable Address Space''' (PA-addresses) are [[Internet Protocol]] addresses assigned by [[Regional Internet Registries]] directly to an [[Internet Service Provider]] which can be aggregated into a single [[autonomous system number]] for improved internet routing efficiency.<ref>http://www.ripe.net/info/faq/rs/isp.html#5</ref>
'''Provider-aggregatable address space''' ('''PA''') is a block of [[IP address]]es assigned by a [[regional Internet registry]] to an [[Internet service provider]] which can be [[Route aggregation|aggregated]] into a single route advertisement for improved Internet routing efficiency.<ref>{{cite web |title=What are Provider Aggregatable (PA) addresses and Provider Independent (PI) addresses? |url=https://www.ripe.net/participate/member-support/faqs/isp-related-questions/pa-pi |website=RIPE Network Coordination Centre |publisher=RIPE NCC |access-date=7 December 2023}}</ref>


Unlike [[Provider Independent Address Space]] IP addresses, the end-user can not take the numbers with them if they change ISPs.
Unlike [[provider-independent address space]], the end-user of address blocks within a provider-supplied space cannot reuse the addresses if they change up-stream connectivity providers.


==References==
==References==
{{reflist}}
{{reflist}}


[[Category:Network addressing]]
== See also ==
[[Category:IP addresses]]
* [[Provider Independent Address Space]]



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Latest revision as of 08:56, 7 December 2023

Provider-aggregatable address space (PA) is a block of IP addresses assigned by a regional Internet registry to an Internet service provider which can be aggregated into a single route advertisement for improved Internet routing efficiency.[1]

Unlike provider-independent address space, the end-user of address blocks within a provider-supplied space cannot reuse the addresses if they change up-stream connectivity providers.

References

[edit]
  1. ^ "What are Provider Aggregatable (PA) addresses and Provider Independent (PI) addresses?". RIPE Network Coordination Centre. RIPE NCC. Retrieved 7 December 2023.