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Ip2region is an offline IP-to-Region localization library and IP data management framework with both IPv4 and IPv6 supports, 10-microsecond level query efficiency, xdb search client for many programming languages
The Balanced Routing Table (BART) adapts D.E. Knuth's Allotment Routing Table (ART) algorithm to deliver comparable lookup speeds with superior update efficiency and a significantly smaller memory footprint.
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