Summary

Country
US United States
Organization First Communications LLC
Domain firstcomm.com
Number of IPv4 128,768
Number of IPv6 1.1389× 1029
AS Type Hosting
Registry ARIN
Allocated April 25, 2000 (about 25 years ago)
Updated March 02, 2012 (about 13 years ago)

IP Ranges

AS16399 announces 21 IPv4 ranges and 8 IPv6 ranges.

That's a total of 128,768 IPv4 addresses and 1.1389× 1029 IPv6 addresses.

Prefix Organization Size Registry Status
64.27.128.0/19
US First Communications LLC
8,192 ARIN ALLOCATION
66.244.160.0/19
US Specialty Title Services - Hoffman Estates
8,192 ARIN REASSIGNMENT
67.206.64.0/19
US Tri-cities Immediate Care Llc-delnor
8,192 ARIN REASSIGNMENT
69.7.192.0/19
US Cimco Communications
8,192 ARIN REASSIGNMENT
69.7.197.0/24
US H&m Limousine Service, Inc.
256 ARIN REASSIGNMENT
74.222.32.0/19
US Hartshorne Plunkard Architecture
8,192 ARIN REASSIGNMENT
168.92.0.0/19
US First Communications LLC
8,192 ARIN ALLOCATION
168.92.1.0/24
US First Communications LLC
256 ARIN ALLOCATION
168.92.3.0/24
US First Communications LLC
256 ARIN ALLOCATION
168.93.64.0/18
US First Communications LLC
16,384 ARIN ALLOCATION
168.93.128.0/18
US First Communications LLC
16,384 ARIN ALLOCATION
198.163.183.0/24
US THE SEGERDAHL CORP.
256 ARIN ALLOCATION
207.135.160.0/19
US First Communications LLC
8,192 ARIN ALLOCATION
209.45.176.0/24
US Centurylink Communications, LLC
256 ARIN ALLOCATION
209.170.160.0/20
US Cimco Communications
4,096 ARIN REASSIGNMENT
216.21.32.0/19
US Sutton Place Hotel
8,192 ARIN REASSIGNMENT
216.126.206.0/24
US MCC TECHNOLOGY INC
256 ARIN ALLOCATION
216.130.96.0/19
US First Communications LLC
8,192 ARIN ALLOCATION
216.146.64.0/19
US Hanley Flight & Zimmerman, LLC
8,192 ARIN REASSIGNMENT
216.159.224.0/19
US Chicago Indoor Racing
8,192 ARIN REASSIGNMENT
216.159.230.0/24
US GAMON INTERNATIONAL
256 ARIN REASSIGNMENT
Prefix Organization Size Registry Status
2606:7d80::/32
US First Communications LLC
7.9228× 1028 ARIN ALLOCATION
2606:7d80:1000::/36
US First Communications LLC
4.9518× 1027 ARIN ALLOCATION
2606:7d80:2000::/36
US First Communications LLC
4.9518× 1027 ARIN ALLOCATION
2606:7d80:3000::/36
US First Communications LLC
4.9518× 1027 ARIN ALLOCATION
2606:7d80:4000::/36
US First Communications LLC
4.9518× 1027 ARIN ALLOCATION
2606:7d80:5000::/36
US First Communications LLC
4.9518× 1027 ARIN ALLOCATION
2606:7d80:6000::/36
US First Communications LLC
4.9518× 1027 ARIN ALLOCATION
2606:7d80:7000::/36
US First Communications LLC
4.9518× 1027 ARIN ALLOCATION

Peers

AS16399 actively fosters the following peering relationships that enhance network performance through direct, settlement-free traffic exchange. Even with a modest number of peers, each connection serves as a strategic asset—optimizing routing, reducing latency, and minimizing transit costs.

Upstreams

AS16399 connects to the global Internet via at least 4 upstream providers. In this setup, AS16399 acts as a customer, subscribing to these transit services to obtain full BGP routing information and ensure reliable, redundant access to external networks.

Downstreams

AS16399 serves as a transit provider the following ASes, delivering the BGP routes needed for global connectivity. This downstream relationship underscores AS16399's role in extending Internet access beyond its own infrastructure.

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