$ query “AS19108” --type=asn → 1 result(s)

AS19108 · SUDDENLINK-COMMUNICATIONS

Optimum

AS19108 is run by Optimum and is a mid-size transit provider, established in the United States in 2000. The system announces an impressive 2.8 million IPv4 addresses, including a /12, and supports IPv6. The bulk of its IP address space is in the United States.

  • Top 5% — Top 5% of all autonomous systems by reach and degree

Basic Information

Country
🇺🇸 United States
Category
Internet Service Provider
Network Role
Mid-size Transit
Data Origin
Authoritative — Metadata from authoritative RIR registry (ARIN, RIPE, APNIC, etc.)
Registered
November 20, 2000
Last Changed
October 05, 2026
Last Seen
October 23, 2026 (active)

Prefix Summary

IPv4 Prefixes (raw / aggregated)
408 / 81
IPv6 Prefixes (raw / aggregated)
27 / 8
IPv4 Addresses
2 848 256
Largest IPv4 Prefix
/12 (1 048 576 addresses)
Largest IPv6 Prefix
/32
Geolocated Countries
🇺🇸 United States (2 848 256 IPs)
Prefix Changed
October 10, 2026

Reputation

Reputation
Good — 37 flagged IPs out of 2 848 256 total (0.00%)
Open Proxies
1 known open proxies in this network

Connectivity Summary

Upstream Providers
4 upstreams providing transit
Peers
24 networks exchanging traffic without transit
Downstream Customers
72 downstreams buying transit
Unclassified
1 unclassified BGP neighbor
Degree
101 unique BGP neighbors
Reach
76 networks in customer cone

Upstream Providers (4)

  • AS3356 — LEVEL3 (Tier-1 transit)
  • AS174 — COGENT-174 (Tier-1 transit)
  • AS1299 — TWELVE99 (Tier-1 transit)
  • AS5650 — FRONTIER-FRTR

Prefix Lists

IPv4 Prefixes (408 total)

  • 47.208.0.0/12 (1 048 576 addresses (/12 prefix))
  • 50.24.0.0/14 (262 144 addresses (/14 prefix))
  • 74.192.0.0/14 (262 144 addresses (/14 prefix))
  • 75.108.0.0/14 (262 144 addresses (/14 prefix))
  • 74.196.0.0/15 (131 072 addresses (/15 prefix))
  • 173.80.0.0/15 (131 072 addresses (/15 prefix))
  • 173.216.0.0/15 (131 072 addresses (/15 prefix))
  • 24.32.0.0/16 (65 536 addresses (/16 prefix))
  • 24.121.0.0/16 (65 536 addresses (/16 prefix))
  • 66.76.0.0/16 (65 536 addresses (/16 prefix))
  • 173.218.0.0/16 (65 536 addresses (/16 prefix))
  • 208.180.0.0/16 (65 536 addresses (/16 prefix))
  • 24.156.0.0/17 (32 768 addresses (/17 prefix))
  • 24.206.128.0/17 (32 768 addresses (/17 prefix))
  • 72.47.0.0/17 (32 768 addresses (/17 prefix))
  • 173.219.0.0/17 (32 768 addresses (/17 prefix))
  • 209.33.0.0/17 (32 768 addresses (/17 prefix))
  • 72.47.128.0/18 (16 384 addresses (/18 prefix))
  • 173.219.128.0/18 (16 384 addresses (/18 prefix))
  • 205.201.64.0/18 (16 384 addresses (/18 prefix))
  • 207.192.192.0/18 (16 384 addresses (/18 prefix))
  • 209.207.0.0/18 (16 384 addresses (/18 prefix))
  • 64.72.32.0/19 (8 192 addresses (/19 prefix))
  • 66.205.96.0/19 (8 192 addresses (/19 prefix))
  • 207.254.224.0/20 (4 096 addresses (/20 prefix))
  • 216.134.80.0/20 (4 096 addresses (/20 prefix))
  • 216.134.72.0/21 (2 048 addresses (/21 prefix))
  • 24.54.116.0/22 (1 024 addresses (/22 prefix))
  • 24.224.60.0/22 (1 024 addresses (/22 prefix))
  • 24.245.72.0/22 (1 024 addresses (/22 prefix))
  • 167.160.140.0/22 (1 024 addresses (/22 prefix))
  • 207.254.248.0/22 (1 024 addresses (/22 prefix))
  • 24.72.186.0/23 (512 addresses (/23 prefix))
  • 24.224.36.0/23 (512 addresses (/23 prefix))
  • 24.224.58.0/23 (512 addresses (/23 prefix))
  • 24.245.68.0/23 (512 addresses (/23 prefix))
  • 64.234.0.0/23 (512 addresses (/23 prefix))
  • 64.234.30.0/23 (512 addresses (/23 prefix))
  • 207.254.240.0/23 (512 addresses (/23 prefix))
  • 207.254.246.0/23 (512 addresses (/23 prefix))
  • 207.254.254.0/23 (512 addresses (/23 prefix))
  • 24.31.17.0/24 (256 addresses (/24 prefix))
  • 24.49.194.0/24 (256 addresses (/24 prefix))
  • 24.49.200.0/24 (256 addresses (/24 prefix))
  • 24.54.114.0/24 (256 addresses (/24 prefix))
  • 24.72.175.0/24 (256 addresses (/24 prefix))
  • 24.75.113.0/24 (256 addresses (/24 prefix))
  • 24.75.123.0/24 (256 addresses (/24 prefix))
  • 24.75.124.0/24 (256 addresses (/24 prefix))
  • 24.75.126.0/24 (256 addresses (/24 prefix))

IPv6 Prefixes (27 total)

  • 2600:5408::/32
  • 2600:5400:8000::/33
  • 2600:5400:2000::/35
  • 2600:5400:1000::/36
  • 2600:5400:7000::/36
  • 2600:5401::/44
  • 2600:541e::/44
  • 2620:121:d000::/44