$ query “AS19693” --type=asn → 1 result(s)

AS19693 · CENTRILOGIC-ASN

Centrilogic Inc.

AS19693 is run by Centrilogic Inc. and is a residential access provider, based in the United States since 2007. The system announces a respectable 12 544 IPv4 addresses, and supports IPv6. Most of its address space is geolocated to the United States, with additional presence in Canada and Brazil, and a smaller footprint in another country.

Basic Information

Country
🇺🇸 United States
Category
Internet Service Provider
Network Role
Access Provider
Data Origin
Authoritative — Metadata from authoritative RIR registry (ARIN, RIPE, APNIC, etc.)
Registered
August 22, 2007
Last Changed
October 03, 2026
Last Seen
October 10, 2026 (active)

Prefix Summary

IPv4 Prefixes (raw / aggregated)
25 / 17
IPv6 Prefixes (raw / aggregated)
1 / 1
IPv4 Addresses
12 544
Largest IPv4 Prefix
/21 (2 048 addresses)
Largest IPv6 Prefix
/32
Geolocated Countries
🇺🇸 United States (12 208 IPs), 🇨🇦 Canada (256 IPs), 🇧🇷 Brazil (64 IPs) and 1 more
Prefix Changed
May 08, 2026

Reputation

Reputation
Pristine — 0 flagged IPs

Connectivity Summary

Upstream Providers
4 upstreams providing transit
Downstream Customers
1 downstream buying transit
Degree
5 unique BGP neighbors
Reach
1 network in customer cone

Upstream Providers (4)

  • AS174 — COGENT-174 (Tier-1 transit)
  • AS1299 — TWELVE99 (Tier-1 transit)
  • AS2914 — NTT-DATA-2914 (Tier-1 transit)
  • AS46887 — ZAYO-CCF-AS46887

Prefix Lists

IPv4 Prefixes (25 total)

  • 157.238.136.0/21 (2 048 addresses (/21 prefix))
  • 198.87.208.0/21 (2 048 addresses (/21 prefix))
  • 209.251.48.0/21 (2 048 addresses (/21 prefix))
  • 158.247.92.0/22 (1 024 addresses (/22 prefix))
  • 173.240.4.0/22 (1 024 addresses (/22 prefix))
  • 206.198.196.0/22 (1 024 addresses (/22 prefix))
  • 172.98.204.0/23 (512 addresses (/23 prefix))
  • 209.251.60.0/23 (512 addresses (/23 prefix))
  • 161.242.11.0/24 (256 addresses (/24 prefix))
  • 161.242.37.0/24 (256 addresses (/24 prefix))
  • 173.240.10.0/24 (256 addresses (/24 prefix))
  • 173.240.13.0/24 (256 addresses (/24 prefix))
  • 173.240.14.0/24 (256 addresses (/24 prefix))
  • 204.17.197.0/24 (256 addresses (/24 prefix))
  • 209.251.62.0/24 (256 addresses (/24 prefix))
  • 216.42.131.0/24 (256 addresses (/24 prefix))
  • 216.42.132.0/24 (256 addresses (/24 prefix))

IPv6 Prefixes (1 total)

  • 2604:9000::/32