$ query “AS37451” --type=asn → 1 result(s)

AS37451 · CONGOTELECOM

CONGO TELECOM

AS37451 is run by CONGO TELECOM and is a mid-size transit provider, based in Congo - Brazzaville. The system announces 8 704 IPv4 addresses, and supports IPv6. Its primary geographic footprint is in Congo - Brazzaville, with additional presence in the United Kingdom and the United States, and a smaller footprint in another country.

  • #1 in Congo - Brazzaville — Top 10 by reach within country

Basic Information

Country
🇨🇬 Congo - Brazzaville
Category
Internet Service Provider
Network Role
Mid-size Transit
Data Origin
Authoritative — Metadata from authoritative RIR registry (ARIN, RIPE, APNIC, etc.)
Last Changed
March 04, 2026
Last Seen
July 12, 2026 (active)

Prefix Summary

IPv4 Prefixes (raw / aggregated)
34 / 14
IPv6 Prefixes (raw / aggregated)
1 / 1
IPv4 Addresses
8 704
Largest IPv4 Prefix
/21 (2 048 addresses)
Largest IPv6 Prefix
/48
Geolocated Countries
🇨🇬 Congo - Brazzaville (11 264 IPs), 🇬🇧 United Kingdom (1 280 IPs), 🇺🇸 United States (768 IPs) and 1 more
Prefix Changed
June 28, 2026

Reputation

Reputation
Good — 2 flagged IPs out of 8 704 total (0.02%)

Connectivity Summary

Upstream Providers
3 upstreams providing transit
Peers
1 network exchanging traffic without transit
Downstream Customers
13 downstreams buying transit
Unclassified
2 unclassified BGP neighbors
Degree
19 unique BGP neighbors
Reach
31 networks in customer cone

Upstream Providers (3)

  • AS174 — COGENT (Tier-1 transit)
  • AS1299 — TWELVE99 (Tier-1 transit)
  • AS37468 — ANGOLA-CABLES

Prefix Lists

IPv4 Prefixes (34 total)

  • 102.129.72.0/21 (2 048 addresses (/21 prefix))
  • 102.129.88.0/22 (1 024 addresses (/22 prefix))
  • 197.157.252.0/22 (1 024 addresses (/22 prefix))
  • 102.129.68.0/22 (1 024 addresses (/22 prefix))
  • 102.129.84.0/23 (512 addresses (/23 prefix))
  • 102.129.92.0/23 (512 addresses (/23 prefix))
  • 154.53.210.0/23 (512 addresses (/23 prefix))
  • 102.129.66.0/23 (512 addresses (/23 prefix))
  • 102.129.82.0/24 (256 addresses (/24 prefix))
  • 102.129.64.0/24 (256 addresses (/24 prefix))
  • 102.129.81.0/24 (256 addresses (/24 prefix))
  • 102.129.94.0/24 (256 addresses (/24 prefix))
  • 102.213.232.0/24 (256 addresses (/24 prefix))
  • 154.53.209.0/24 (256 addresses (/24 prefix))

IPv6 Prefixes (1 total)

  • 2c0f:f568::/48