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AS21547 FirstLight Fiber, Inc.

United States FLF-OXNET ARIN 57 IPv4 prefixes 5 IPv6 prefixes
IPv4 addresses
70,912
IPv6 /48 networks
131,072
RPKI
26 valid1 invalid35 no ROA
Peers and downstreams
5

Holder

AS name
FLF-OXNET
Description
Firstlight Fiber - Oxford Networks
Organisation
FirstLight Fiber, Inc.
Abuse contact
Not published
Assigned
2001-05-20
Registered
2001-05-21
Record last changed
2026-04-22 19:09 UTC
140.165.50.0/24198.212.225.0/24198.212.226.0/23198.212.230.0/24208.0.176.0/2163.127.192.0/2164.140.192.0/1864.140.199.0/2464.140.224.0/1964.140.224.0/2464.140.225.0/2464.140.234.0/2464.140.246.0/2466.186.160.0/1966.186.162.0/2466.186.163.0/2466.186.171.0/2466.186.173.0/2466.186.176.0/2466.186.184.0/2466.186.188.0/2466.231.192.0/1966.231.192.0/2466.231.207.0/2466.231.208.0/2466.231.214.0/2466.231.215.0/2466.231.217.0/2466.231.219.0/2466.231.220.0/2269.168.0.0/2069.49.128.0/1969.49.128.0/2469.49.129.0/2469.49.133.0/2469.49.140.0/2369.49.144.0/2469.49.146.0/2469.49.148.0/2469.49.153.0/2472.12.64.0/1972.12.75.0/2472.12.76.0/2372.12.78.0/2472.12.79.0/2472.12.80.0/2472.12.84.0/2472.12.87.0/2472.12.91.0/2472.12.92.0/2472.12.94.0/2372.55.224.0/1972.55.247.0/2472.55.248.0/2372.55.254.0/2374.220.224.0/2074.220.236.0/24

Upstream graph

Upstreams and their upstreams, from BGP paths
AS6939 Hurricane Electric LLC AS6939 · US Hurricane Electric LLC AS174 AS174 AS174 AS174 AS1299 Arelion Sweden AB AS1299 · SE Arelion Sweden AB AS3257 GTT Communications Inc. AS3257 · US GTT Communications In… AS13536 FirstLight Fiber, Inc. AS13536 · US FirstLight Fiber, Inc. AS21547 FirstLight Fiber, Inc. AS21547 · US FirstLight Fiber, Inc.

Network health

Grade C · 60/100
partly Prefixes covered by valid ROAs
26 of 62 announced prefixes are RPKI valid, 35 have no ROA.		 10/25
fail No RPKI invalid announcements
1 announced prefix is RPKI invalid and dropped by networks that validate.		 0/10
pass Announces IPv6
5 IPv6 prefixes.		 15/15
partly More than one upstream
1 upstream seen in BGP.		 5/10
pass Working abuse contact
ipabuse@firstlight.net is published.		 15/15
fail Publishes a geofeed
No geofeed found. Without one, location databases have to guess.		 0/10
pass No prefixes smaller than /24 or /48
All prefixes are /24 (IPv4) or /48 (IPv6) or larger.		 10/10
pass Registry record maintained
Last changed 2026-04-22.		 5/5
Built from the announced prefixes, RPKI, the registry record and geofeeds. Checks without data are not counted. Also in the API.
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Routing changes

Last 30 days
No changes recorded in the last 30 days. Changes are recorded each time the routing data of this AS is refreshed. Get alerts in real time.

WHOIS

aut-num:        AS21547
as-name:        FLASN-21547
handle:         AS21547
registrant:     FNL-76 (FirstLight Networks, LLC)
technical,administrative:IA93-ARIN (IP Admin) <ip-admin@firstlight.net>
noc:            NOC1665-ARIN (NOC) <noc@firstlight.net>
dns:            HDP11-ARIN (Hostmaster, the DNS people) <dnsupdates@firstlight.net>
abuse:          ABUSE719-ARIN (Abuse) <ipabuse@firstlight.net>
last changed:   2026-04-22T15:09:11-04:00
registration:   2001-05-21T00:00:00-04:00
source:         ARIN (RDAP)