$ query “AS18596” --type=asn → 1 result(s)
AS18596 · MADISONTELCO
Madison Telephone Company
AS18596 is run by Madison Telephone Company and is a residential access provider, based in the United States since 2000. The system announces a respectable 12 288 IPv4 addresses, and supports IPv6. Most of its address space is geolocated to the United States.
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
- September 18, 2000
- Last Changed
- July 01, 2026
- Last Seen
- July 10, 2026 (active)
Prefix Summary
- IPv4 Prefixes (raw / aggregated)
- 7 / 2
- IPv6 Prefixes (raw / aggregated)
- 1 / 1
- IPv4 Addresses
- 12 288
- Largest IPv4 Prefix
- /19 (8 192 addresses)
- Largest IPv6 Prefix
- /32
- Geolocated Countries
- 🇺🇸 United States (12 288 IPs)
- Prefix Changed
- July 02, 2026
Reputation
- Reputation
- Pristine — 0 flagged IPs
Connectivity Summary
- Upstream Providers
- 2 upstreams providing transit
- Downstream Customers
- 1 downstream buying transit
- Degree
- 3 unique BGP neighbors
- Reach
- 1 network in customer cone
Upstream Providers (2)
Prefix Lists
IPv4 Prefixes (7 total)
- 66.242.192.0/19 (8 192 addresses (/19 prefix))
- 76.77.224.0/20 (4 096 addresses (/20 prefix))
IPv6 Prefixes (1 total)
- 2605:1680::/32