$ query “AS21700” --type=asn → 1 result(s)
AS21700 · NEPTUNE-NETWORKS
Neptune Networks LLC
AS21700 belongs to Neptune Networks LLC and is a mid-size transit provider, registered in the United States since 2020. The system announces 3 072 IPv4 addresses, 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
- Hosting
- Network Role
- Mid-size Transit
- Data Origin
- Authoritative — Metadata from authoritative RIR registry (ARIN, RIPE, APNIC, etc.)
- Registered
- December 04, 2020
- Last Changed
- March 04, 2026
- Last Seen
- April 30, 2026 (active)
Prefix Summary
- IPv4 Prefixes (raw / aggregated)
- 8 / 8
- IPv6 Prefixes (raw / aggregated)
- 2 / 2
- IPv4 Addresses
- 3 072
- Largest IPv4 Prefix
- /22 (1 024 addresses)
- Largest IPv6 Prefix
- /32
- Geolocated Countries
- 🇺🇸 United States (4 864 IPs)
- Prefix Changed
- March 04, 2026
Reputation
- Reputation
- Pristine — 0 flagged IPs
Connectivity Summary
- Upstream Providers
- 2 upstreams providing transit
- Peers
- 223 networks exchanging traffic without transit
- Downstream Customers
- 38 downstreams buying transit
- Unclassified
- 17 unclassified BGP neighbors
- Degree
- 280 unique BGP neighbors
- Reach
- 38 networks in customer cone
Upstream Providers (2)
Prefix Lists
IPv4 Prefixes (8 total)
- 209.151.100.0/22 (1 024 addresses (/22 prefix))
- 172.82.22.0/23 (512 addresses (/23 prefix))
- 23.157.160.0/24 (256 addresses (/24 prefix))
- 157.254.142.0/24 (256 addresses (/24 prefix))
- 159.148.114.0/24 (256 addresses (/24 prefix))
- 192.109.165.0/24 (256 addresses (/24 prefix))
- 216.74.121.0/24 (256 addresses (/24 prefix))
- 216.126.57.0/24 (256 addresses (/24 prefix))
IPv6 Prefixes (2 total)
- 2606:f1c0::/32
- 2602:fe2e::/37