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How Spain ranks worldwide on dormant space, the transfer market, routing security and address density.
PeeringDB-registered presence.
APNIC-measured end-user deployment.
Paper holder: holds 372.5M /48 blocks but only 9.8% of users are IPv6-capable.
Clean prefixes (valid RPKI + IRR, no mismatch).
Cumulative IPv4, IPv6, and ASN allocations to Spain over time.
The largest autonomous systems registered to Spain by IPv4 footprint.
Spain against its land-border neighbours on IPv4, IPv6, AS numbers and per-capita density.
Share of announced address space covered by valid Route Origin Authorizations.
1,164 autonomous systems registered to Spain. Click an AS for detail.
| AS15704ES | AS15704 XTRA TELECOM S.A. | 960.8K | 368 |
| AS12338ES | EUSKALTEL Euskaltel S.A. | 658.2K | 118 |
| AS29119ES | SERVIHOSTING-AS AIRE NETWORKS DEL MEDITERRANEO SL UNIPERSONAL | 631.6K | 412 |
| AS12334ES | R Cable y Telecable Telecomunicaciones, S.A.U. | 443.4K | 37 |
| AS200845ES | AVATEL-AS AVATEL TELECOM, SA | 355.1K | 463 |
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| AS201234ES | SBT Spotting Brands Technologies S.L | — | — | 0 |
| AS202158ES | tvmazarron Tele Satelite De Mazarron SL | — | — | 0 |
| AS60082ES | CATNIX-RS Consorci de Serveis Universitaris de Catalunya | — | — | 0 |
| AS216171ES | DABBLEAM Dabbleam SL | — | — | 0 |
| AS15616ES | ES-IBERCOMTELECOM-BACKBONE XTRA TELECOM S.A. | — | — | 0 |
| AS203212ES | wico Free Technologies Excom S.L. | — | — | 0 |
| AS206828ES | connecta CONNECTA-COMUNICACIONS INTEGRALS DE CATALUNYA S.L | — | — | 0 |
| AS207923ES | AIREON AVATEL TELECOM, SA | — | — | 0 |
| AS12367ES | VERIZON-ES VERIZON SPAIN S.L. | — | — | 0 |
| AS44233ES | SPCNET-AS Bullhost Cloud Services, SL | — | — | 0 |