AS211680 Sistemas Informaticos, S.A.

AS-BITSIGHT NSEC - Sistemas Informaticos, S.A. · registered in Portugal

IPv4 addresses1,0243 prefixes · <0.001% of announced IPv4

Rank in Portugal#50largest network in PT by IPv4 space, of 127 · 0.02% of PT

Rank worldwide#35,600of 79,396 networks with IPv4

IPv63 x /482 prefixes

CountryPortugal138 ASNs registered there

Open AS211680 in ASN lookup Look up an IP in this network (45.156.128.1) All networks in Portugal

IPv4 prefixes

All 3 prefixes, in address order.

45.156.128.0/23
185.180.143.0/24
185.226.198.0/24

IPv6 prefixes

All 2 prefixes.

2a10:3c0:2::/48
2a10:3c0:100::/47

Similar-sized networks in Portugal

ASNNameIPv4 addresses

AS215446#47 SPTELECOM Sousa Pinheiro Telecomunicacoes, Lda1,024

AS208277#48 CIBERCONCEITO CiberConceito Informatica e Servicos Unipessoal, Lda1,024

AS47784#49 INSTINF Entidade de Servicos Partilhados da Administracao Publica, I.P.1,024

AS8609#51 Universidade Catolica Portuguesa1,024

AS200706#52 ONEIT AXIANSEU - DIGITAL SOLUTIONS, S.A.1,024

AS200859#53 IDONCLOUD IDON Digital Solutions, Unipessoal LDA1,024

IP-to-ASN data: iptoasn.com (public domain). Snapshot downloaded 2026-11-11, refreshed daily. Ranges are what each network announces in BGP, not registry allocations. Data sources