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

93,952

Number of IPv6

1.58 × 10²⁹

ASN type

ISP

Status

Assigned

Registry

ARIN

Allocated

May 21, 2001

Last updated

April 22, 2026

IP Ranges

58 IPv4 prefixes, 5 IPv6 prefixes

Prefix	Company	Number of IPs
63.127.192.0/21	Verizon Business	2,048
64.140.192.0/18	TruVista Communications	16,384
64.140.199.0/24	TruVista Communications	256
64.140.224.0/19	TruVista Communications	8,192
64.140.224.0/24	TruVista Communications	256
64.140.225.0/24	TruVista Communications	256
64.140.234.0/24	TruVista Communications	256
64.140.246.0/24	TruVista Communications	256
66.186.160.0/19	InterLIR LLC	8,192
66.186.162.0/24	InterLIR LLC	256
66.186.163.0/24	InterLIR LLC	256
66.186.171.0/24	InterLIR LLC	256
66.186.173.0/24	InterLIR LLC	256
66.186.176.0/24	InterLIR LLC	256
66.186.184.0/24	InterLIR LLC	256
66.186.188.0/24	InterLIR LLC	256
66.231.192.0/19	Hamed Ershad03282013130011992	8,192
66.231.192.0/24	Hamed Ershad03282013130011992	256
66.231.207.0/24	Morgan Wireless, LLC	256
66.231.208.0/24	TruVista Communications	256
66.231.214.0/24	TruVista Communications	256
66.231.215.0/24	TruVista Communications	256
66.231.217.0/24	TruVista Communications	256
66.231.219.0/24	TruVista Communications	256
66.231.220.0/22	TruVista Communications	1,024
69.49.128.0/19	InterLIR LLC	8,192
69.49.128.0/24	InterLIR LLC	256
69.49.129.0/24	InterLIR LLC	256
69.49.133.0/24	InterLIR LLC	256
69.49.140.0/23	InterLIR LLC	512
69.49.144.0/24	InterLIR LLC	256
69.49.146.0/24	InterLIR LLC	256
69.49.148.0/24	InterLIR LLC	256
69.49.153.0/24	InterLIR LLC	256
69.168.0.0/20	TruVista Communications	4,096
72.12.64.0/19	InterLIR LLC	8,192
72.12.75.0/24	InterLIR LLC	256
72.12.76.0/23	InterLIR LLC	512
72.12.78.0/24	InterLIR LLC	256
72.12.79.0/24	InterLIR LLC	256
72.12.80.0/24	InterLIR LLC	256
72.12.84.0/24	InterLIR LLC	256
72.12.87.0/24	InterLIR LLC	256
72.12.91.0/24	InterLIR LLC	256
72.12.92.0/24	InterLIR LLC	256
72.12.94.0/23	InterLIR LLC	512
72.55.224.0/19	TruVista Communications	8,192
72.55.247.0/24	TruVista Communications	256
72.55.248.0/23	TruVista Communications	512
72.55.254.0/23	TruVista Communications	512
74.220.224.0/20	TruVista Communications	4,096
74.220.236.0/24	TruVista Communications	256
140.165.50.0/24	Princeton University	256
198.212.225.0/24	Armor Defense Inc	256
198.212.226.0/23	Armor Defense Inc	512
198.212.230.0/24	Armor Defense Inc	256
208.0.176.0/21	Massachusetts Institute of Technology	2,048
208.3.240.0/21	Massachusetts Institute of Technology	2,048
2001:4940::/32	TruVista Communications	7.92 × 10²⁸
2001:4940:2001::/48	TruVista Communications	1.21 × 10²⁴
2001:4940:2006::/48	TruVista Communications	1.21 × 10²⁴
2001:4940:2007::/48	TruVista Communications	1.21 × 10²⁴
2604:3f00::/32	TruVista Communications	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.