PingOmni

BGP & ASN tools.

Find out why a prefix is not reachable everywhere: RPKI, IRR route objects, visibility and 30 days of history in one check. Look up any AS, route or BGP path. Free, no sign-up.

Announcement check

Best for: Finding out why a prefix is not reachable everywhere, or checking a new one before you announce it.

A prefix like 193.0.0.0/21 (also one that is not announced yet), or an address to check the route that covers it.
Optional: the AS that should announce it.

Our server asks RIPEstat (BGP state, visibility and history from RIPE NCC’s route collectors), NLNOG IRR Explorer (route objects in every major IRR) and RIPEstat’s RPKI validator.

Results appear here after you press Check announcement.

Troubleshooting step by step

Run any tool and these links carry its target along. Nothing runs until you press a tool’s button.

Connectivity

A website or service is unreachable

  1. PingDoes the host answer at all, and how fast?
  2. TracerouteWhere along the path do responses stop?
  3. MTRIs there loss that carries through to the destination?
  4. Port checkIs the service’s own TCP port reachable?
Domain and DNS

A domain does not resolve correctly

  1. DNS lookupWhat do resolvers answer, and with which status?
  2. NS checkDo all name servers answer and agree?
  3. DNSSEC checkIs DNSSEC broken, so validating resolvers refuse it?
  4. Registration lookupIs it registered, active, and delegated to those servers?
  5. Port checkDoes the address it resolves to accept connections?
Email

Email is not arriving or lands in spam

  1. MX checkWhich servers receive the domain’s mail?
  2. SPF checkWhich servers may send as the domain?
  3. DMARC checkWhat happens to mail that fails?
  4. DKIM checkIs a signing key published, and is it strong enough?
  5. SMTP checkDoes the mail server answer, encrypt and have reverse DNS?
  6. Blacklist checkIs the sending server on spam lists?
Routing

A network is unreachable from some places

  1. Announcement checkDo RPKI, the IRR and visibility all look right?
  2. Looking glassWhich paths do networks around the world take to it?
  3. TracerouteWhich networks does traffic cross from here?
  4. Registration lookupWho is the address space registered to?

Where the data comes from

  • RIPEstatRouting data from RIPE NCC’s Routing Information Service.
  • PeeringDBNetwork details for each AS.
  • NLNOG IRR ExplorerRoute objects from every major IRR.
  • Team CymruAS names.

Answers are kept for up to 5 minutes, so a route that just changed can take that long to show. Built by PingOmni, makers of RadiusOne.