$ query “AS4230” --type=asn → 1 result(s)

AS4230 · CLARO

CLARO S.A.

AS4230 is run by CLARO S.A. and is a major transit provider, registered in Brazil since 1999. The system announces an impressive 5.2 million IPv4 addresses, including a /13, and supports IPv6. The bulk of its IP address space is in Brazil. This AS's prefix announcements have been recently modified.

  • Top 5% — Top 5% of all autonomous systems by reach and degree
  • #53 by Reach — Top 100 by customer cone size
  • #4 in Brazil — Top 10 by reach within country
  • Pioneer — Registered before the year 2000

Basic Information

Country
🇧🇷 Brazil
Category
Internet Service Provider
Network Role
Major Transit
Data Origin
Authoritative — Metadata from authoritative RIR registry (ARIN, RIPE, APNIC, etc.)
Registered
November 16, 1999
Last Changed
March 04, 2026
Last Seen
October 10, 2026 (active)

Prefix Summary

IPv4 Prefixes (raw / aggregated)
81 / 44
IPv6 Prefixes (raw / aggregated)
6 / 6
IPv4 Addresses
5 159 680
Largest IPv4 Prefix
/13 (524 288 addresses)
Largest IPv6 Prefix
/30
Geolocated Countries
🇧🇷 Brazil (5 159 680 IPs)
Prefix Changed
October 11, 2026

Reputation

Reputation
Good — 12 flagged IPs out of 5 159 680 total (0.00%)

Connectivity Summary

Upstream Providers
9 upstreams providing transit
Peers
542 networks exchanging traffic without transit
Downstream Customers
356 downstreams buying transit
Unclassified
19 unclassified BGP neighbors
Degree
926 unique BGP neighbors
Reach
1 430 networks in customer cone

Upstream Providers (9)

  • AS3356 — LEVEL3 (Tier-1 transit)
  • AS174 — COGENT-174 (Tier-1 transit)
  • AS1299 — TWELVE99 (Tier-1 transit)
  • AS3257 — GTT-BACKBONE (Tier-1 transit)
  • AS1031 — PEER1-1031
  • AS701 — UUNET (Tier-1 transit)
  • AS6762 — SEABONE-NET (Tier-1 transit)
  • AS6453 — AS6453 (Tier-1 transit)
  • AS7738 — V-TAL

Prefix Lists

IPv4 Prefixes (81 total)

  • 191.56.0.0/13 (524 288 addresses (/13 prefix))
  • 200.248.0.0/13 (524 288 addresses (/13 prefix))
  • 200.208.0.0/14 (262 144 addresses (/14 prefix))
  • 200.244.0.0/14 (262 144 addresses (/14 prefix))
  • 187.28.0.0/15 (131 072 addresses (/15 prefix))
  • 189.2.0.0/15 (131 072 addresses (/15 prefix))
  • 189.16.0.0/15 (131 072 addresses (/15 prefix))
  • 189.22.0.0/15 (131 072 addresses (/15 prefix))
  • 189.42.0.0/15 (131 072 addresses (/15 prefix))
  • 189.52.0.0/15 (131 072 addresses (/15 prefix))
  • 189.86.0.0/15 (131 072 addresses (/15 prefix))
  • 191.38.0.0/15 (131 072 addresses (/15 prefix))
  • 200.166.0.0/15 (131 072 addresses (/15 prefix))
  • 200.172.0.0/15 (131 072 addresses (/15 prefix))
  • 200.178.0.0/15 (131 072 addresses (/15 prefix))
  • 200.182.0.0/15 (131 072 addresses (/15 prefix))
  • 200.190.0.0/15 (131 072 addresses (/15 prefix))
  • 200.212.0.0/15 (131 072 addresses (/15 prefix))
  • 200.230.0.0/15 (131 072 addresses (/15 prefix))
  • 200.242.0.0/15 (131 072 addresses (/15 prefix))
  • 201.30.0.0/15 (131 072 addresses (/15 prefix))
  • 201.38.0.0/15 (131 072 addresses (/15 prefix))
  • 201.44.0.0/15 (131 072 addresses (/15 prefix))
  • 201.56.0.0/15 (131 072 addresses (/15 prefix))
  • 201.64.0.0/15 (131 072 addresses (/15 prefix))
  • 201.72.0.0/15 (131 072 addresses (/15 prefix))
  • 179.68.0.0/16 (65 536 addresses (/16 prefix))
  • 187.30.0.0/16 (65 536 addresses (/16 prefix))
  • 187.43.0.0/16 (65 536 addresses (/16 prefix))
  • 189.88.0.0/16 (65 536 addresses (/16 prefix))
  • 200.174.0.0/16 (65 536 addresses (/16 prefix))
  • 200.214.0.0/16 (65 536 addresses (/16 prefix))
  • 200.227.0.0/16 (65 536 addresses (/16 prefix))
  • 200.228.0.0/16 (65 536 addresses (/16 prefix))
  • 200.241.0.0/16 (65 536 addresses (/16 prefix))
  • 201.90.0.0/16 (65 536 addresses (/16 prefix))
  • 200.139.192.0/18 (16 384 addresses (/18 prefix))
  • 200.192.0.0/18 (16 384 addresses (/18 prefix))
  • 179.237.0.0/20 (4 096 addresses (/20 prefix))
  • 186.249.160.0/20 (4 096 addresses (/20 prefix))
  • 189.51.176.0/20 (4 096 addresses (/20 prefix))
  • 179.237.16.0/21 (2 048 addresses (/21 prefix))
  • 179.237.24.0/23 (512 addresses (/23 prefix))
  • 200.10.159.0/24 (256 addresses (/24 prefix))

IPv6 Prefixes (6 total)

  • 2804:1388::/30
  • 2804:a8::/32
  • 2600:1419:19::/48
  • 2600:1419:4c00::/48
  • 2600:1419:5c00::/48
  • 2600:1419:8000::/48