We're not in Kansas anymore: my experiences with IP geolocation#

Shane Alcock (Alcock Network Intelligence, IODA)

• Why: Not core, but a candid consumer-side account of geolocation data quality — how the datasets are derived, where they go wrong, and the gotchas in using them — which matters to anyone doing geo-based policy, content access, or outage attribution. The IODA outage-attribution use case makes it concrete.
• What: The speaker's experiences consuming IP geolocation data inside IODA (Internet Outage Detection and Analysis) to attribute observed Internet outages to geographic regions, plus a documentation of how geolocation datasets are built and the failure modes encountered. (from abstract only)
• How: Practitioner experience report: working with commercial/derived geolocation feeds against observed outage data, and the mismatches that arise when the data's granularity, freshness, or methodology doesn't match the attribution task.
• Where applicable: Applicable to anyone using IP geolocation for analytics, geo-blocking, or content delivery decisions; not a technique with infrastructure prerequisites, but a set of caveats.