All ASNs

Autonomous System details for AS21547

AS21547

FirstLight Networks, LLC • firstlight.net

AS21547 — FirstLight Networks, LLC

AS Name

OXNET

Country

United States (US)

Website

firstlight.net

Number of IPv4

89,088

Number of IPv6

1.58 × 10²⁹

ASN type

ISP

Status

Assigned

Registry

ARIN

Allocated

May 21, 2001

Last updated

April 22, 2026

IP Ranges

54 IPv4 prefixes, 5 IPv6 prefixes

Prefix	Company	Number of IPs
63.127.192.0/21	WorldPath Internet Services	2,048
64.140.192.0/18	FirstLight Networks, LLC	16,384
64.140.199.0/24	FirstLight Networks, LLC	256
64.140.224.0/19	FirstLight Networks, LLC	8,192
64.140.224.0/24	FirstLight Networks, LLC	256
64.140.225.0/24	FirstLight Networks, LLC	256
64.140.234.0/24	FirstLight Networks, LLC	256
64.140.246.0/24	FirstLight Networks, LLC	256
66.186.160.0/19	FirstLight Networks, LLC	8,192
66.186.162.0/24	FirstLight Networks, LLC	256
66.186.163.0/24	FirstLight Networks, LLC	256
66.186.171.0/24	FirstLight Networks, LLC	256
66.186.173.0/24	FirstLight Networks, LLC	256
66.186.176.0/24	FirstLight Networks, LLC	256
66.186.184.0/24	FirstLight Networks, LLC	256
66.186.188.0/24	FirstLight Networks, LLC	256
66.231.192.0/19	RedZone Wireless	8,192
66.231.192.0/24	RedZone Wireless	256
66.231.207.0/24	Oxford Networks	256
66.231.208.0/24	FirstLight Networks, LLC	256
66.231.214.0/24	FirstLight Networks, LLC	256
66.231.215.0/24	FirstLight Networks, LLC	256
66.231.217.0/24	FirstLight Networks, LLC	256
66.231.219.0/24	FirstLight Networks, LLC	256
66.231.220.0/22	FirstLight Networks, LLC	1,024
69.49.128.0/19	FirstLight Networks, LLC	8,192
69.49.128.0/24	FirstLight Networks, LLC	256
69.49.129.0/24	FirstLight Networks, LLC	256
69.49.133.0/24	FirstLight Networks, LLC	256
69.49.140.0/23	FirstLight Networks, LLC	512
69.49.144.0/24	FirstLight Networks, LLC	256
69.49.146.0/24	FirstLight Networks, LLC	256
69.49.148.0/24	FirstLight Networks, LLC	256
69.49.153.0/24	FirstLight Networks, LLC	256
69.168.0.0/20	FirstLight Networks, LLC	4,096
72.12.64.0/19	FirstLight Networks, LLC	8,192
72.12.75.0/24	FirstLight Networks, LLC	256
72.12.76.0/23	FirstLight Networks, LLC	512
72.12.78.0/24	FirstLight Networks, LLC	256
72.12.79.0/24	FirstLight Networks, LLC	256
72.12.80.0/24	FirstLight Networks, LLC	256
72.12.84.0/24	FirstLight Networks, LLC	256
72.12.87.0/24	FirstLight Networks, LLC	256
72.12.91.0/24	FirstLight Networks, LLC	256
72.12.92.0/24	FirstLight Networks, LLC	256
72.12.94.0/23	FirstLight Networks, LLC	512
72.55.224.0/19	FirstLight Networks, LLC	8,192
72.55.247.0/24	FirstLight Networks, LLC	256
72.55.248.0/23	FirstLight Networks, LLC	512
72.55.254.0/23	FirstLight Networks, LLC	512
74.220.224.0/20	FirstLight Networks, LLC	4,096
74.220.236.0/24	FirstLight Networks, LLC	256
140.165.50.0/24	Teledyne Brown Engineering	256
198.212.230.0/24	Concord Hospital	256
2001:4940::/32	FirstLight Networks, LLC	7.92 × 10²⁸
2001:4940:2001::/48	FirstLight Networks, LLC	1.21 × 10²⁴
2001:4940:2006::/48	FirstLight Networks, LLC	1.21 × 10²⁴
2001:4940:2007::/48	FirstLight Networks, LLC	1.21 × 10²⁴
2604:3f00::/32	FirstLight Networks, LLC	7.92 × 10²⁸

IP ranges are the different blocks of IP addresses advertised by an Autonomous System (AS). These ranges can be used by the same organization operating the AS, or by different organizations.

Peers of AS21547

0 peers

AS21547 has no peers recorded.

Peering is a direct, often free, traffic exchange between Autonomous Systems (ASNs). They share routes only to their own networks and customers, making connections faster and cheaper for that specific traffic, without providing full internet access to each other.

Upstreams of AS21547

1 upstreams

AS13536

AS21547 uses these Autonomous Systems as its upstreams.

An upstream (or transit provider) is another AS that AS21547 pays for full internet connectivity, allowing it to reach all global destinations and be reachable by them.

Downstreams of AS21547

4 downstreams

AS36501 AS36787 AS36823 AS395342

AS21547 provides internet connectivity to these downstream Autonomous Systems.

A downstream is a customer Autonomous System that pays another AS (its provider) for internet access. The provider AS carries the downstream's traffic and makes its network reachable.