$ query “AS28573” --type=asn → 1 result(s)

AS28573 — CLARO-NXT-TELECOMUNICACOES

Claro NXT Telecomunicacoes Ltda

AS28573 is a residential access provider run by Claro NXT Telecomunicacoes Ltda, registered in Brazil since 2003. The network announces an impressive 10.0 million IPv4 addresses, including a /13. Supports IPv6.

Basic Information

Country
🇧🇷 Brazil
Category
Internet Service Provider
Network Role
Access Provider
Data Origin
Authoritative — Metadata from authoritative RIR registry (ARIN, RIPE, APNIC, etc.)
Registered
November 27, 2003
Last Changed
March 04, 2026
Last Seen
March 04, 2026

Prefix Summary

IPv4 Prefixes (raw / aggregated)
1 589 / 272
IPv6 Prefixes (raw / aggregated)
1 659 / 131
IPv4 Addresses
9 955 072
Largest IPv4 Prefix
/13 (524 288 addresses)
Largest IPv6 Prefix
/38
Geolocated Countries
🇦🇺 AU (220 IPs)
Prefix Changed
March 04, 2026

Reputation

Reputation
Good — 90 flagged IPs out of 9 955 072 total (0.00%)

Connectivity Summary

Upstream Providers
2 upstream autonomous systems providing transit
Peers
27 autonomous systems exchanging traffic without transit fees
Downstream Customers
1 downstream autonomous systems buying transit
Degree
30 unique BGP neighbors (providers + customers + peers)
Reach
34 926 — customer cone size measuring network influence
Degree Rank
#4 762
Reach Rank
#350

Upstream Providers (2)

Prefix Lists

IPv4 Prefixes (1 589 total)

  • 179.136.0.0/13 (524 288 addresses)
  • 191.176.0.0/13 (524 288 addresses)
  • 177.80.0.0/14 (262 144 addresses)
  • 186.204.0.0/14 (262 144 addresses)
  • 187.36.0.0/14 (262 144 addresses)
  • 187.180.0.0/14 (262 144 addresses)
  • 189.4.0.0/14 (262 144 addresses)
  • 189.60.0.0/14 (262 144 addresses)
  • 189.100.0.0/14 (262 144 addresses)
  • 189.120.0.0/14 (262 144 addresses)
  • 191.188.0.0/14 (262 144 addresses)
  • 201.80.0.0/14 (262 144 addresses)
  • 177.32.0.0/15 (131 072 addresses)
  • 177.140.0.0/15 (131 072 addresses)
  • 177.182.0.0/15 (131 072 addresses)
  • 177.192.0.0/15 (131 072 addresses)
  • 179.152.0.0/15 (131 072 addresses)
  • 179.158.0.0/15 (131 072 addresses)
  • 179.208.0.0/15 (131 072 addresses)
  • 179.212.0.0/15 (131 072 addresses)
  • 179.218.0.0/15 (131 072 addresses)
  • 179.222.0.0/15 (131 072 addresses)
  • 179.234.0.0/15 (131 072 addresses)
  • 181.220.0.0/15 (131 072 addresses)
  • 186.220.0.0/15 (131 072 addresses)
  • 187.2.0.0/15 (131 072 addresses)
  • 187.22.0.0/15 (131 072 addresses)
  • 201.74.0.0/15 (131 072 addresses)
  • 177.35.0.0/16 (65 536 addresses)
  • 177.142.0.0/16 (65 536 addresses)
  • 177.194.0.0/16 (65 536 addresses)
  • 177.235.0.0/16 (65 536 addresses)
  • 179.105.0.0/16 (65 536 addresses)
  • 179.154.0.0/16 (65 536 addresses)
  • 179.156.0.0/16 (65 536 addresses)
  • 179.210.0.0/16 (65 536 addresses)
  • 179.214.0.0/16 (65 536 addresses)
  • 179.217.0.0/16 (65 536 addresses)
  • 179.220.0.0/16 (65 536 addresses)
  • 179.232.0.0/16 (65 536 addresses)
  • 181.222.0.0/16 (65 536 addresses)
  • 186.223.0.0/16 (65 536 addresses)
  • 187.21.0.0/16 (65 536 addresses)
  • 187.65.0.0/16 (65 536 addresses)
  • 187.67.0.0/16 (65 536 addresses)
  • 187.106.0.0/16 (65 536 addresses)
  • 187.122.0.0/16 (65 536 addresses)
  • 187.255.0.0/16 (65 536 addresses)
  • 189.29.0.0/16 (65 536 addresses)
  • 189.33.0.0/16 (65 536 addresses)

IPv6 Prefixes (1 659 total)

  • 2804:14c::/38
  • 2804:14d:ec00::/39
  • 2804:14c:400::/40
  • 2804:14c:3b00::/40
  • 2804:14c:3d00::/40
  • 2804:14c:3f00::/40
  • 2804:14c:4100::/40
  • 2804:14c:4300::/40
  • 2804:14c:4500::/40
  • 2804:14c:4700::/40
  • 2804:14c:5500::/40
  • 2804:14c:5700::/40
  • 2804:14c:5900::/40
  • 2804:14c:5b00::/40
  • 2804:14c:5d00::/40
  • 2804:14c:5f00::/40
  • 2804:14c:6100::/40
  • 2804:14c:6300::/40
  • 2804:14c:6500::/40
  • 2804:14c:6b00::/40
  • 2804:14c:6f00::/40
  • 2804:14c:7500::/40
  • 2804:14c:7700::/40
  • 2804:14c:7900::/40
  • 2804:14c:7b00::/40
  • 2804:14c:7d00::/40
  • 2804:14c:7f00::/40
  • 2804:14c:8100::/40
  • 2804:14c:8300::/40
  • 2804:14c:8500::/40
  • 2804:14c:8700::/40
  • 2804:14c:9900::/40
  • 2804:14c:9b00::/40
  • 2804:14c:9d00::/40
  • 2804:14c:a700::/40
  • 2804:14c:a900::/40
  • 2804:14c:b100::/40
  • 2804:14c:b300::/40
  • 2804:14c:b500::/40
  • 2804:14c:bb00::/40
  • 2804:14c:bd00::/40
  • 2804:14c:bf00::/40
  • 2804:14c:c600::/40
  • 2804:14c:ca00::/40
  • 2804:14c:cc00::/40
  • 2804:14c:ce00::/40
  • 2804:14c:d000::/40
  • 2804:14c:d400::/40
  • 2804:14c:d800::/40
  • 2804:14c:da00::/40