{"uid":"cap_jaXW5Hoyb8a_Ov6xPxtSY","slug":"saylor-innovations-asn-lookup-c302bd78","name":"Saylor Innovations ASN Lookup","description":"ASN network lookup - holder, announced IPv4 and IPv6 prefix counts, peering policy, exchange points and facilities for any AS number (RIPEstat and PeeringDB)","url":"https://saylorinnovations.com/api/net/asn?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"type":"string","const":"http"},"method":{"enum":["GET"],"type":"string"},"queryParams":{"type":"object","required":["asn"],"properties":{"asn":{"type":"string","description":"AS number, e.g. AS15169 or 13335"}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string","const":"json"},"example":{"type":"object","required":["asn","announced"],"properties":{"asn":{"type":"string"},"block":{"description":"Block number the data was read at"},"holder":{"type":["string","null"]},"source":{"type":["string","null"],"description":"Data source the values come from"},"prefixes":{"type":["object","null"]},"announced":{"type":"boolean"},"peeringdb":{"type":["object","null"]},"checked_at":{"type":["string","null"],"description":"Time the check was run (UTC)"}}}}}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.01","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.01/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_aEjZXoy_yCGUMd6kfcveA","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.01","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Looks up network details for any AS number, returning holder name, announced IPv4/IPv6 prefix counts, peering policy, exchange points, and facilities via RIPEstat and PeeringDB","exampleAgentPrompt":"Look up AS13335 for me — I need the holder name, how many IPv4 and IPv6 prefixes it announces, its peering policy, and any exchange points or facilities listed in PeeringDB.","exampleUseCases":[{"title":"Identify a suspicious network source","prompt":"I'm seeing traffic from AS15169 in my logs — can you look it up and tell me who the holder is, whether it's announcing routes, and what peering policy it has?"},{"title":"Research a competitor's network footprint","prompt":"Pull the ASN details for AS3356 — I want to know the holder, how many IPv4 and IPv6 prefixes they announce, and which internet exchange points they're present at."},{"title":"Verify an ISP's peering presence","prompt":"Can you check AS6939 for me and return its peering policy, any listed facilities, and the exchange points it participates in?"}],"resultDescription":"Returns a JSON object containing the ASN string, the holder name (or null), a boolean indicating whether the ASN is currently announcing routes, an object with IPv4 and IPv6 announced prefix counts, a PeeringDB object with peering policy, exchange points and facilities, the data source identifier, and the UTC timestamp of when the check was run.","failureModes":["Invalid or non-existent ASN returns announced: false with null holder and empty prefixes","Malformed ASN input (missing 'AS' prefix or non-numeric) may return an error or empty result","RIPEstat or PeeringDB downstream unavailability may cause null fields or stale data","Rate limiting or payment failure returns HTTP 402 or 429"],"whenToPreferThis":"Choose this endpoint when you need comprehensive ASN metadata combining both routing data (from RIPEstat) and peering/facility data (from PeeringDB) in a single call. Prefer it over raw RIPEstat or PeeringDB queries when you need a unified view of holder, prefix announcements, and peering presence without managing multiple upstream API integrations. Best for network research, ISP due diligence, BGP troubleshooting, and peering policy discovery.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-17T12:41:16.449Z","isFirstParty":false,"canonicalSlug":"saylor-innovations-asn-lookup-c302bd78"}