Autonomous System details

AS21547

FirstLight Networks, LLC  ·  firstlight.net

United States

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AS21547 – FirstLight Networks, LLC

Field Value
Country United States
Website firstlight.net
Hosted domains 987
IPv4 addresses 72,960
IPv6 addresses 158,459,951,805,987,519,887,600,000,000
ASN type ISP
Registry arin
Allocated 25 years ago on May 21, 2001
Updated 8 days ago on Apr 22, 2026

IP Ranges

Netblock Company Num of IPs
64.140.192.0/18 FirstLight Networks, LLC 16,384
64.140.224.0/19 FirstLight Networks, LLC 8,192
66.186.160.0/19 FirstLight Networks, LLC 8,192
66.231.192.0/19 FirstLight Networks, LLC 8,192
69.49.128.0/19 FirstLight Networks, LLC 8,192
72.12.64.0/19 FirstLight Networks, LLC 8,192
72.55.224.0/19 FirstLight Networks, LLC 8,192
69.168.0.0/20 FirstLight Networks, LLC 4,096
74.220.224.0/20 FirstLight Networks, LLC 4,096
63.127.192.0/21 WorldPath Internet Services 2,048
208.0.176.0/21 WorldPath Internet Services 2,048
208.3.240.0/21 WorldPath Internet Services 2,048
66.231.220.0/22 FirstLight Networks, LLC 1,024
69.49.140.0/23 FirstLight Networks, LLC 512
72.12.76.0/23 FirstLight Networks, LLC 512
72.12.94.0/23 FirstLight Networks, LLC 512
72.55.248.0/23 FirstLight Networks, LLC 512
72.55.254.0/23 FirstLight Networks, LLC 512
198.212.226.0/23 Concord Hospital 512
64.140.199.0/24 FirstLight Networks, LLC 256
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
66.186.162.0/24 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
66.231.192.0/24 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
69.49.128.0/24 FirstLight Networks, LLC 256
69.49.129.0/24 FirstLight Networks, LLC 256
69.49.133.0/24 Auto Europe 256
69.49.144.0/24 FirstLight Networks, LLC 256
69.49.146.0/24 Unitel Inc 256
69.49.148.0/24 FirstLight Networks, LLC 256
69.49.153.0/24 FirstLight Networks, LLC 256
72.12.75.0/24 MEMIC 256
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
72.55.247.0/24 FirstLight Networks, LLC 256
74.220.236.0/24 FirstLight Networks, LLC 256
140.165.50.0/24 Teledyne Brown Engineering 256
198.212.225.0/24 Concord Hospital 256
198.212.230.0/24 Concord Hospital 256

Netblock Company
2001:4940::/32 FirstLight Networks, LLC
2604:3f00::/32 FirstLight Networks, LLC
2001:4940:2001::/48 FirstLight Networks, LLC
2001:4940:2006::/48 FirstLight Networks, LLC
2001:4940:2007::/48 FirstLight Networks, LLC
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WHOIS Details

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                                                ASHandle:       AS21547
                                                OrgID:          AS21547
                                                ASName:         AS21547
                                                ASNumber:       AS21547
                                                RegDate:        0000-00-00
                                                Updated:        0000-00-00
                                                TechHandle:     AA00-AAAA
                                                Source:         AAAA
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Hosted Domains

There are 987 domain names hosted across 263 IP addresses on this ASN.

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IP Address Domain Domains on this IP
64.140.253.44 ██████████ 40
63.127.194.195 ██████████ 35
66.186.172.183 ██████████ 35
64.140.253.45 ██████████ 34
69.49.151.180 ███████ 26
66.186.172.185 ██████████ 26
66.186.172.182 ██████████ 20
63.127.195.68 ██████████ 19
72.12.70.172 ██████████ 14
66.186.172.181 ██████████ 14

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Peers

There are 5 peers for this ASN.

Peers Name
AS13536 FirstLight Networks, LLC
AS36501 GARMIN INTERNATIONAL INC.
AS36787 Hearst-Argyle Television, Inc.
AS36823 Martin's Point HealthCare
AS395342 Exeter Hospital
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ASN API & Database

Upstreams

There is 1 peer for this ASN.

upstreams Name
AS13536 FirstLight Networks, LLC
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ASN API & Database

Downstreams

There are 4 downstreams for this ASN.

Downstreams Name
AS36501 GARMIN INTERNATIONAL INC.
AS36787 Hearst-Argyle Television, Inc.
AS36823 Martin's Point HealthCare
AS395342 Exeter Hospital
Get this data and more insights on related domains, allocation dates, registry names, IP counts with IPinfo's IP-to-ASN product.
ASN API & Database

Pingable IPs

211 IPs in this ASN replied to an ICMP ping during our most recent internet scan. Learn more.

IP Address ASN Details
66.186.176.140 AS21547 FirstLight Networks, LLC 7.40ms from Boston, US
69.49.155.129 AS21547 FirstLight Networks, LLC 5.45ms from Boston, US
69.49.151.97 AS21547 FirstLight Networks, LLC 2.86ms from Boston, US
66.231.220.65 AS21547 FirstLight Networks, LLC 4.94ms from Boston, US
69.168.3.129 AS21547 FirstLight Networks, LLC 4.91ms from Boston, US
66.186.160.61 AS21547 FirstLight Networks, LLC 1.85ms from Boston, US
64.140.193.60 AS21547 FirstLight Networks, LLC 2.61ms from Boston, US
66.186.162.1 AS21547 FirstLight Networks, LLC 10.70ms from Boston, US
69.168.1.133 AS21547 FirstLight Networks, LLC 3.79ms from Boston, US
64.140.242.185 AS21547 FirstLight Networks, LLC 1.90ms from Boston, US
69.49.154.112 AS21547 FirstLight Networks, LLC 8.12ms from Boston, US
64.140.246.1 AS21547 FirstLight Networks, LLC 4.92ms from Boston, US
72.12.75.71 AS21547 FirstLight Networks, LLC 3.72ms from Boston, US
66.231.214.1 AS21547 FirstLight Networks, LLC 5.42ms from Boston, US
69.168.11.161 AS21547 FirstLight Networks, LLC 1.93ms from Boston, US
66.186.178.65 AS21547 FirstLight Networks, LLC 4.66ms from Secaucus, US
72.55.242.1 AS21547 FirstLight Networks, LLC 5.39ms from Boston, US
66.186.170.253 AS21547 FirstLight Networks, LLC 1.91ms from Boston, US
72.55.248.1 AS21547 FirstLight Networks, LLC 5.39ms from Boston, US
66.186.165.129 AS21547 FirstLight Networks, LLC 5.38ms from Boston, US
69.49.137.145 AS21547 FirstLight Networks, LLC 2.92ms from Boston, US
64.140.232.73 AS21547 FirstLight Networks, LLC 1.82ms from Boston, US
69.49.148.79 AS21547 FirstLight Networks, LLC 5.26ms from Boston, US
69.49.149.129 AS21547 FirstLight Networks, LLC 4.08ms from Boston, US
64.140.249.61 AS21547 FirstLight Networks, LLC 1.85ms from Boston, US

Other Pingable IPs

Below is a random selection of 25 IPs that replied to an ICMP ping during our most recent internet scan.

IP Address ASN Details
185.37.124.11 AS43366 OSSO B.V. 2.84ms from Amsterdam, NL
99.83.147.43 AS16509 Amazon.com, Inc. 0.04ms from Bangkok, TH
208.100.27.107 AS29802 HIVELOCITY, Inc. 0.34ms from Chicago, US
183.18.44.107 AS4134 CHINANET BACKBONE 9.48ms from Guangzhou, CN
151.60.38.43 AS1267 WIND TRE S.P.A. 3.31ms from Milan, IT
78.88.5.251 AS29314 VECTRA S.A. 9.41ms from Warsaw, PL
180.79.216.27 AS17429 BEIJING GEHUA CATV NETWORK CO.LTD 8.74ms from Beijing, CN
70.121.103.203 AS11427 Charter Communications Inc 13.27ms from Dallas, US
71.237.67.27 AS7922 Comcast Cable Communications, LLC 4.83ms from Denver, US
150.241.97.139 AS215590 DpkgSoft International Limited 0.08ms from Frankfurt am Main, DE
39.46.177.155 AS17557 Pakistan Telecommunication Company Limited 11.36ms from Islamabad, PK
88.250.88.11 AS9121 Turk Telekomunikasyon Anonim Sirketi 4.34ms from Istanbul, TR
86.142.175.59 AS2856 British Telecommunications PLC 6.39ms from London, GB
31.120.170.11 AS2856 British Telecommunications PLC 2.46ms from London, GB
103.123.145.251 AS24298 Apollo Global Net AS, Application Service Provider, Manila 0.54ms from Manila, PH
79.45.165.123 AS3269 Telecom Italia S.p.A. 1.28ms from Milan, IT
85.250.211.171 AS1680 Cellcom Fixed Line Communication L.P 4.87ms from Petaẖ Tiqva, IL
144.86.24.203 AS25019 Saudi Telecom Company JSC 6.41ms from Riyadh, SA
24.113.89.11 AS11404 Wave Broadband 3.43ms from Seattle, US
220.94.170.123 AS4766 Korea Telecom 1.50ms from Seoul, KR
49.52.0.91 AS4538 China Education and Research Network Center 4.42ms from Shanghai, CN
91.244.211.91 AS59607 Telewizja Kablowa Hajnowka Kiedys Kiryluk Sp.J. 5.53ms from Warsaw, PL
184.75.228.235 AS22709 North State Telephone, LLC 8.34ms from Atlanta, US
183.88.210.91 AS45758 Triple T Broadband Public Company Limited 2.65ms from Bangkok, TH
52.80.130.155 AS55960 Beijing Guanghuan Xinwang Digital 3.41ms from Beijing, CN

Traceroute

Below is a recent traceroute taken from the IPinfo ProbeNet to an IP in this ASN. Learn more.

$
traceroute -a -n -q1 -f3 69.49.152.81
traceroute to 69.49.152.81 (69.49.152.81): 64 hops max, 52 byte packets
3 [] 15.230.139.130 352.312 ms
4 *
5 *
6 [AS16509] 52.46.166.156 659.202 ms
7 *
10 [AS21547] 69.49.152.81 5.495 ms
Measurement taken from IPinfo ProbeNet in Boston, US
On

Related Networks

What is an ASN?

Autonomous System Numbers (ASNs) are assigned to entities such as Internet Service Providers and other large organizations that control blocks of IP addresses. This network page, and the organization field that's shown on the main IP address information page and also returned in the geolocation API are based on the ASN.

The ASN details will often correspond to the IP address owner, but for smaller organizations it may be that organization's parent, or their ISP. Find out more about AS21547 at robtex.

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