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&lt;p class="std-text">Matching a single origin ASN on SROS now demands 700 policy terms because as-path-group limits cap at just 128 lines. We must abandon legacy regular expression matching for &lt;strong>tree lookup architectures&lt;/strong> to survive the scaling collapse of modern routing tables. &lt;strong>AS-SET objects&lt;/strong> replace brittle regex chains, a shift validated by Jakob Heitz&amp;#039;s demonstration of origin matching on IOS-XR. The strategic necessity of migrating toward &lt;strong>million-line prefix-lists&lt;/strong> is no longer theoretical; Cisco Live 2026 data confirms AI agents generate 450% more traffic per task than humans, forcing this hand.&lt;/p></description></item><item><title>DNS lookup speeds under 100ms for ASN mapping</title><link>https://wirez.top/posts/dns-lookup-speeds-under-100ms-for-asn-mapping/</link><pubDate>Sun, 01 Feb 2026 00:00:00 +0000</pubDate><guid>https://wirez.top/posts/dns-lookup-speeds-under-100ms-for-asn-mapping/</guid><description>&lt;meta charset="utf-8">
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&lt;p class="std-text">With over &lt;strong>92,000 registered ASNs&lt;/strong> globally, legacy WHOIS tools struggle to match the speed of modern DNS-based lookup services. The central thesis is that flexible, database-driven DNS architectures have superseded static zone files as the critical infrastructure for real-time network intelligence. This shift enables &lt;strong>agentic networks&lt;/strong> to bypass the latency of TCP-based queries, delivering instant Autonomous System Number attribution necessary for 2026 security operations.&lt;/p></description></item></channel></rss>