Netblocksのインターネット接続状況日報

NetBlocks compared with Cloudflare Radar and IODA
ネットブロック	Cloudflareレーダー	IODA
Measurement basis: The Internet Observatory is presented as a real-time measurement service for human rights work. The public site does not detail the measurement method, so the technical basis cannot be audited from it.	Measurement basis: The Outage Center classifies events by scope (nationwide, sub-national, or a single network provider) and records the affected locations and ASNs. The documentation does not name the underlying data sources.	Measurement basis: Combines three signals: BGP routing data from RouteViews and RIPE RIS, unsolicited traffic seen by a network telescope, and active ICMP probing of /24 blocks. A Google Transparency Report signal is also used. Documented methods make results easier to verify.
Granularity and limits: Output is organised around country-level events such as election-day cuts, social media restrictions and exam-related disruptions, reported as individual items.	Granularity and limits: Events carry a scope that can name a state, a city or a network, and a stated cause category such as government order, weather, or cable damage.	Granularity and limits: Signals are aggregated per economy, ASN and first-level administrative region. It targets large outages only, and a February 2024 mobile shutdown in Pakistan went undetected because mobile endpoints rarely answer active probes.
Output and access: Published as written reports plus the Observatory service. The site links a Data Usage Policy, whose terms should be read before reuse of the material.	Output and access: Outage data can be queried at the Radar annotations endpoint with a bearer token, using limit, offset, dateRange and format parameters. Each record includes start and end dates, scope, cause and type.	Output and access: Graphs, overlays and a dashboard of recent high-scoring outages are published on the public website. The documentation reviewed does not mention a public API or bulk download.
Operator and status: Based in London and privately held, owned and run by Alp Toker. It describes itself as independent and non-partisan, and NetBlocks is a registered trademark of Netblocks Ltd.	Operator and status: The Outage Center is part of Cloudflare Radar and is documented in the Cloudflare developer documentation.	Operator and status: A CAIDA project that moved to Georgia Tech in August 2021. The project page describes it as an experimental service running 24/7, and its tools are open source (BGPStream, libtimeseries, Corsaro).
	Cause attribution: Lists causes such as government-ordered shutdowns, weather, infrastructure failures, power loss, and filtering, drawn from publicly available information.	Cause attribution: Cannot determine causes by itself. Attribution requires collaboration with other experts and local contacts, and significant events are verified manually before announcement.

NetBlocks compared with Cloudflare Radar and IODA

ネットブロック

Cloudflareレーダー

IODA

Measurement basis: The Internet Observatory is presented as a real-time measurement service for human rights work. The public site does not detail the measurement method, so the technical basis cannot be audited from it.

Measurement basis: The Outage Center classifies events by scope (nationwide, sub-national, or a single network provider) and records the affected locations and ASNs. The documentation does not name the underlying data sources.

Measurement basis: Combines three signals: BGP routing data from RouteViews and RIPE RIS, unsolicited traffic seen by a network telescope, and active ICMP probing of /24 blocks. A Google Transparency Report signal is also used. Documented methods make results easier to verify.

Granularity and limits: Output is organised around country-level events such as election-day cuts, social media restrictions and exam-related disruptions, reported as individual items.

Granularity and limits: Events carry a scope that can name a state, a city or a network, and a stated cause category such as government order, weather, or cable damage.

Granularity and limits: Signals are aggregated per economy, ASN and first-level administrative region. It targets large outages only, and a February 2024 mobile shutdown in Pakistan went undetected because mobile endpoints rarely answer active probes.

Output and access: Published as written reports plus the Observatory service. The site links a Data Usage Policy, whose terms should be read before reuse of the material.

Output and access: Outage data can be queried at the Radar annotations endpoint with a bearer token, using limit, offset, dateRange and format parameters. Each record includes start and end dates, scope, cause and type.

Output and access: Graphs, overlays and a dashboard of recent high-scoring outages are published on the public website. The documentation reviewed does not mention a public API or bulk download.

Operator and status: Based in London and privately held, owned and run by Alp Toker. It describes itself as independent and non-partisan, and NetBlocks is a registered trademark of Netblocks Ltd.

Operator and status: The Outage Center is part of Cloudflare Radar and is documented in the Cloudflare developer documentation.

Operator and status: A CAIDA project that moved to Georgia Tech in August 2021. The project page describes it as an experimental service running 24/7, and its tools are open source (BGPStream, libtimeseries, Corsaro).

Cause attribution: Lists causes such as government-ordered shutdowns, weather, infrastructure failures, power loss, and filtering, drawn from publicly available information.

Cause attribution: Cannot determine causes by itself. Attribution requires collaboration with other experts and local contacts, and significant events are verified manually before announcement.