Exchanges · data from 2026-11-12
AMS-IX Kolkata Amsterdam Internet Exchange Kolkata
Kolkata, IN · members from IX Report (2026-11-12)
Route servers: RPKI + IRR filtering
For each member on the route servers: of the routes it originates, how many a route server would leave out if it dropped RPKI-invalid routes and filtered on the IRR the way IXP route servers commonly build their prefix lists: the member's AS-SETs from PeeringDB (with none, its own AS number), expanded as bgpq4 does against whois.radb.net, with more-specifics of a route object accepted down to /24 and /48 (bgpq4 -A -R 24 / -R 48). 385 routes are RPKI invalid and 746 fail the IRR filter. Only each member's own routes are counted: the collectors show a route's origin, not which network it came through, so customers' routes aren't in these numbers. Route objects only in LEVEL3 or IDNIC (no public dump) count as missing.
| AS9583Sify Technologies Limited | AS9583:AS-SIFY | 2,876 | 362 | 645 | 652 23% |
| AS20940Akamai Technologies | RIPE::AS-AKAMAI | 4,825 | 22 | 78 | 78 2% |
| AS54113Fastly, Inc. | AS54113:AS-FASTLY | 1,861 | 1 | 23 | 23 1% |
2 other route-server members would have every route they originate accepted.
Members
Every member on IX Report's lists for AMS-IX Kolkata, with the routes it originates. Also as members.csv.
| AS20940Akamai Technologies | 4,8254,037 v4 · 788 v6 | 99% | 22 |
| AS9583Sify Technologies Limited | 2,8762,363 v4 · 513 v6 | 71% | 362 |
| AS54113Fastly, Inc. | 1,861613 v4 · 1,248 v6 | 100% | 1 |
| AS32934Meta | 639272 v4 · 367 v6 | 96% | 0 |
| AS149765Coronet Corporation Limited | 488 v4 · 40 v6 | 100% | 0 |
| AS141809AMS-IX Kolkata Route Servers | none seen |