usefulweb.site Internet Outage Atlas

Internet infrastructure explorers

Internet Outage Atlas

Correlate public outage signals (IODA, RIPEstat BGP, live probe) for a country, ASN or domain.

hours

Response of /v2/outages/alerts or /v2/outages/events (or {"alerts":…, "events":…}).

Try an example: Pasted IODA alerts for a country (illustrative)

How it works

Builds a timeline of internet disruptions for a country, network (ASN) or domain by correlating IODA outage alerts and events (BGP, active probing, telescope, traffic signals from Georgia Tech), RIPEstat routing visibility and BGP update bursts, and a direct reachability probe of the domain. Overlapping signals from independent sources are marked as corroborated; single-signal events stay flagged as uncertain.

  • IODA (Internet Outage Detection and Analysis, Georgia Tech) v2 API: /outages/alerts and /outages/events for entityType country or asn over the look-back window. IODA compares BGP-visible /24 blocks, active-probing responses, darknet telescope traffic and Google/Mozilla traffic against their recent history.
  • Alerts are paired per data source (non-normal alert → next "normal" alert) into episodes; an episode without a recovery alert is treated as ongoing.
  • For ASNs (and the ASN hosting a domain's first public IPv4/IPv6 address, via RIPEstat network-info) RIPEstat routing-status gives RIS peer visibility and announced prefixes; bgp-update-activity hours above max(3 × median, 100) updates are flagged as BGP bursts.
  • Domains are also probed directly with one HTTPS GET from this server (reachable = any HTTP response below 500).
  • Intervals from different sources that overlap (30-minute slack) are merged into incidents; ≥2 independent signals = corroborated, otherwise single-signal (could be measurement noise).

For scripts and AI agents

  • JSON API: POST https://internetoutageatlas.usefulweb.site/api/v1/calculate (same calculation as this page)
  • Interface description: OpenAPI 3.1 · AI guide: llms.txt
  • MCP server (Streamable HTTP): https://internetoutageatlas.usefulweb.site/mcp · tool name internet_outage_atlas
Example request
curl -s -X POST https://internetoutageatlas.usefulweb.site/api/v1/calculate \
  -H 'content-type: application/json' \
  -d '{…see OpenAPI examples…}'

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