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Combined ping/traceroute with loss per hop. The result stays on this page.

UDP Port Checker. Probe common UDP services. The result stays on this page.

Bulk Port Checker. Check multiple host:port pairs. The result stays on this page.

Measure response time from multiple regions. The result stays on this page.

Measure latency and jitter from the browser. The result stays on this page.

Browser-based packet loss test via WebRTC. The result stays on this page.

Path MTU Tester. Discover path MTU to a host. The result stays on this page.

Test SMTP banner, STARTTLS and response. The result stays on this page.

Query an NTP server for stratum and offset. The result stays on this page.

gRPC Endpoint Checker. Test gRPC health/reflection endpoints. The result stays on this page.

Bufferbloat Test. Measure latency under load. The result stays on this page.

Interface cost from bandwidth and reference bandwidth. The result stays on this page.

Interactive LSA types and area behaviour. The result stays on this page.

Composite metric from K-values, bandwidth and delay. The result stays on this page.

Administrative Distance Reference. AD values by vendor and protocol. The result stays on this page.

Show which route wins for a destination. The result stays on this page.

Paste a routing table and test destinations. The result stays on this page.

BGP AS-Path Regex Tester. Test AS-path regular expressions. The result stays on this page.

Decode standard and well-known communities. The result stays on this page.

BGP Large Community Decoder. Decode RFC 8092 large communities. The result stays on this page.

BGP Prefix-List Generator. Generate prefix-lists from prefixes. The result stays on this page.

BGP Route-Map Builder. Build route-maps from a form. The result stays on this page.

Static Route Generator. Generate static routes from a table. The result stays on this page.

Estimate flow distribution across ECMP paths. The result stays on this page.