$ query “AS1251” --type=asn → 1 result(s)
AS1251 — FUNDACAO-AMPARO-PESQUISA
FUNDAÇÃO DE AMPARO À PESQUISA DO ESTADO SÃO PAULO
AS1251 is a mid-size transit provider run by FUNDAÇÃO DE AMPARO À PESQUISA DO ESTADO SÃO PAULO, established in Brazil in 1999. The network announces a solid 128 512 IPv4 addresses, including a /16. Supports IPv6.
- Top 5% — Top 5% of all autonomous systems by reach and degree
- Pioneer — Registered before the year 2000
Basic Information
- Country
- 🇧🇷 Brazil
- Category
- Education/Research
- Network Role
- Mid-size Transit
- Data Origin
- Authoritative — Metadata from authoritative RIR registry (ARIN, RIPE, APNIC, etc.)
- Registered
- November 12, 1999
- Last Changed
- March 04, 2026
- Last Seen
- March 05, 2026
Prefix Summary
- IPv4 Prefixes (raw / aggregated)
- 41 / 24
- IPv6 Prefixes (raw / aggregated)
- 1 / 1
- IPv4 Addresses
- 128 512
- Largest IPv4 Prefix
- /16 (65 536 addresses)
- Largest IPv6 Prefix
- /32
- Geolocated Countries
- 🇦🇺 AU (1 IPs)
- Prefix Changed
- March 04, 2026
Reputation
- Reputation
- Good — 1 flagged IPs out of 128 512 total (0.00%)
Connectivity Summary
- Upstream Providers
- 2 upstream autonomous systems providing transit
- Peers
- 27 autonomous systems exchanging traffic without transit fees
- Downstream Customers
- 13 downstream autonomous systems buying transit
- Degree
- 44 unique BGP neighbors (providers + customers + peers)
- Reach
- 58 — customer cone size measuring network influence
- Degree Rank
- #3 295
- Reach Rank
- #1 419
Upstream Providers (2)
Prefix Lists
IPv4 Prefixes (41 total)
- 143.108.0.0/16 (65 536 addresses)
- 200.136.32.0/19 (8 192 addresses)
- 200.136.64.0/19 (8 192 addresses)
- 200.18.48.0/20 (4 096 addresses)
- 200.18.240.0/20 (4 096 addresses)
- 200.19.80.0/20 (4 096 addresses)
- 200.136.16.0/20 (4 096 addresses)
- 200.136.96.0/20 (4 096 addresses)
- 200.136.160.0/20 (4 096 addresses)
- 200.144.32.0/20 (4 096 addresses)
- 200.144.80.0/20 (4 096 addresses)
- 200.144.128.0/20 (4 096 addresses)
- 200.144.64.0/21 (2 048 addresses)
- 200.144.120.0/21 (2 048 addresses)
- 200.19.224.0/22 (1 024 addresses)
- 200.136.184.0/22 (1 024 addresses)
- 200.10.178.0/23 (512 addresses)
- 200.18.110.0/23 (512 addresses)
- 200.19.228.0/23 (512 addresses)
- 200.136.182.0/23 (512 addresses)
- 200.144.78.0/23 (512 addresses)
- 200.144.118.0/23 (512 addresses)
- 200.6.42.0/24 (256 addresses)
- 200.136.176.0/24 (256 addresses)
IPv6 Prefixes (1 total)
- 2001:12d8::/32