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Autonomous System

AS18615

Mainstream Fiber Networks, LLC

Mainstream Fiber Networks, LLC United States 🌐 msfiber.net
Announced IPs
38,395
CIDR prefixes
111
ASN
AS18615

Reputation · trust score

A transparent 0–100 signal. Every entity starts at a neutral baseline of 65; threat-intel blocklists, exposure, reverse-DNS, routing and allocation each adjust it up or down. Higher is more trustworthy.

70/100
Moderate
How this score is built

Experimental · trust-vectors model v1.2.0 — a transparent heuristic, not a definitive verdict. How it works →

Network profile

Source: PeeringDB →
Network type NSP
Traffic level 20-50Gbps
Geographic scope North America
Traffic ratio Heavy Inbound
Peering policy Open
IRR record AS18615:AS-ALL

Present at 3 internet exchanges: FD-IX - Indianapolis, DE-CIX Dallas: DE-CIX Dallas Peering LAN, DE-CIX Chicago

Website ↗

AS18615 — global IP footprint

Cities where AS18615 has measurable IPv4 allocation. Click any dot to open that city's page. Size and color scale with IP count.

View on 3D globe →

Top CIDR ranges

CIDRIPsPTR DensityOrganizationCountryStateCity
38.194.0.0/18 16.4K
0.0%
Mainstream Fiber Networks, LLC US Indiana Burrows
38.2.0.0/19 8.2K
0.0%
Mainstream Fiber Networks, LLC US Indiana Indpls
23.252.0.0/20 4.1K
96.4%
Mainstream Fiber Networks, LLC US Indiana Newburgh
38.2.16.0/20 4.1K
0.0%
Mainstream Fiber Networks, LLC US Indiana Indpls
38.194.16.0/20 4.1K
6.5%
Mainstream Fiber Networks, LLC US Indiana Elizabeth
38.194.48.0/20 4.1K
2.8%
Mainstream Fiber Networks, LLC US Indiana Burrows
163.182.176.0/20 4.1K
93.5%
Mainstream Fiber Networks, LLC US Indiana Salem
38.2.0.0/21 2.0K
0.0%
Mainstream Fiber Networks, LLC US Indiana Indpls
38.2.16.0/21 2.0K
0.0%
Mainstream Fiber Networks, LLC US Indiana Montpelier
38.194.16.0/21 2.0K
0.4%
Mainstream Fiber Networks, LLC US Indiana Elizabeth
38.194.32.0/21 2.0K
0.7%
Mainstream Fiber Networks, LLC US Indiana Corydon
147.160.8.0/21 2.0K
86.3%
Mainstream Fiber Networks, LLC US Indiana Morgantown
149.20.248.0/21 2.0K
97.4%
Mainstream Fiber Networks, LLC US Indiana Corydon
38.2.0.0/22 1.0K
0.0%
Mainstream Fiber Networks, LLC US Indiana Oxford
38.2.12.0/22 1.0K
0.0%
Mainstream Fiber Networks, LLC US Indiana Indianapolis
38.2.24.0/22 1.0K
0.0%
Mainstream Fiber Networks, LLC US Indiana Indpls
38.194.0.0/22 1.0K
0.3%
Mainstream Fiber Networks, LLC US Indiana Corydon
38.194.12.0/22 1.0K
0.0%
Mainstream Fiber Networks, LLC US Indiana Mount Vernon
38.194.28.0/22 1.0K
25.1%
Mainstream Fiber Networks, LLC US Indiana Floyds Knobs
38.194.32.0/22 1.0K
0.0%
Mainstream Fiber Networks, LLC US Indiana Corydon
38.194.40.0/22 1.0K
1.1%
Mainstream Fiber Networks, LLC US Indiana Marengo
74.116.20.0/22 1.0K
95.0%
Mainstream Fiber Networks, LLC US Indiana Corydon
38.2.6.0/23 512
0.0%
Mainstream Fiber Networks, LLC US Indiana Oxford
38.2.10.0/23 512
0.0%
Mainstream Fiber Networks, LLC US Indiana Fowler
38.2.12.0/23 512
0.0%
Mainstream Fiber Networks, LLC US Indiana Elizabeth
38.2.28.0/23 512
0.0%
Mainstream Fiber Networks, LLC US Indiana Indianapolis
38.194.6.0/23 512
0.0%
Mainstream Fiber Networks, LLC US Indiana Corydon
38.194.8.0/23 512
0.2%
Mainstream Fiber Networks, LLC US Indiana Corydon
38.194.26.0/23 512
0.0%
Mainstream Fiber Networks, LLC US Indiana Floyds Knobs
38.194.36.0/23 512
0.0%
Mainstream Fiber Networks, LLC US Indiana Corydon
38.194.46.0/23 512
0.0%
Mainstream Fiber Networks, LLC US Indiana Poseyville
206.126.242.0/23 512
83.6%
Mainstream Fiber Networks, LLC US Indiana Indianapolis
38.2.4.0/24 256
0.0%
Mainstream Fiber Networks, LLC US Indiana Oxford
38.2.9.0/24 256
0.0%
Mainstream Fiber Networks, LLC US Indiana Nashville
38.2.14.0/24 256
0.0%
Mainstream Fiber Networks, LLC US Indiana Elizabeth
38.2.31.0/24 256
0.0%
Mainstream Fiber Networks, LLC US Indiana Indianapolis
38.194.5.0/24 256
1.2%
Mainstream Fiber Networks, LLC US Indiana Corydon
38.194.11.0/24 256
2.7%
Mainstream Fiber Networks, LLC US Indiana Corydon
38.194.24.0/24 256
0.0%
Mainstream Fiber Networks, LLC US Indiana Floyds Knobs
38.194.39.0/24 256
0.0%
Mainstream Fiber Networks, LLC US Indiana Fredericksburg
38.194.44.0/24 256
0.0%
Mainstream Fiber Networks, LLC US Indiana Lanesville
38.2.5.0/25 128
0.0%
Mainstream Fiber Networks, LLC US Indiana Oxford
38.2.8.0/25 128
0.0%
Mainstream Fiber Networks, LLC US Indiana Nashville
38.2.15.0/25 128
0.0%
Mainstream Fiber Networks, LLC US Indiana Elizabeth
38.2.30.0/25 128
0.0%
Mainstream Fiber Networks, LLC US Indiana Indianapolis
38.194.4.0/25 128
7.8%
Mainstream Fiber Networks, LLC US Indiana Corydon
38.194.10.0/25 128
0.8%
Mainstream Fiber Networks, LLC US Indiana Corydon
38.194.25.128/25 128
0.0%
Mainstream Fiber Networks, LLC US Indiana Floyds Knobs
38.194.38.128/25 128
0.0%
Mainstream Fiber Networks, LLC US Indiana Fredericksburg
38.194.45.128/25 128
0.8%
Mainstream Fiber Networks, LLC US Indiana Lanesville
38.2.5.192/26 64
0.0%
Mainstream Fiber Networks, LLC US Indiana Oxford
38.2.8.128/26 64
0.0%
Mainstream Fiber Networks, LLC US Indiana Nashville
38.2.15.192/26 64
0.0%
Mainstream Fiber Networks, LLC US Indiana Elizabeth
38.2.30.128/26 64
0.0%
Mainstream Fiber Networks, LLC US Indiana Indianapolis
38.194.4.192/26 64
7.8%
Mainstream Fiber Networks, LLC US Indiana Corydon
38.194.10.128/26 64
0.0%
Mainstream Fiber Networks, LLC US Indiana Corydon
38.194.25.64/26 64
0.0%
Mainstream Fiber Networks, LLC US Indiana Floyds Knobs
38.194.38.64/26 64
0.0%
Mainstream Fiber Networks, LLC US Indiana Fredericksburg
38.194.45.64/26 64
1.6%
Mainstream Fiber Networks, LLC US Indiana Lanesville
38.2.5.160/27 32
0.0%
Mainstream Fiber Networks, LLC US Indiana Oxford
38.2.8.192/27 32
0.0%
Mainstream Fiber Networks, LLC US Indiana Nashville
38.2.15.128/27 32
0.0%
Mainstream Fiber Networks, LLC US Indiana Elizabeth
38.2.30.192/27 32
0.0%
Mainstream Fiber Networks, LLC US Indiana Indianapolis
38.194.4.128/27 32
9.4%
Mainstream Fiber Networks, LLC US Indiana Corydon
38.194.10.192/27 32
0.0%
Mainstream Fiber Networks, LLC US Indiana Corydon
38.194.25.32/27 32
0.0%
Mainstream Fiber Networks, LLC US Indiana Floyds Knobs
38.194.38.32/27 32
0.0%
Mainstream Fiber Networks, LLC US Indiana Fredericksburg
38.194.45.32/27 32
0.0%
Mainstream Fiber Networks, LLC US Indiana Lanesville
38.2.5.144/28 16
0.0%
Mainstream Fiber Networks, LLC US Indiana Oxford
38.2.8.224/28 16
0.0%
Mainstream Fiber Networks, LLC US Indiana Nashville
38.2.15.160/28 16
0.0%
Mainstream Fiber Networks, LLC US Indiana Elizabeth
38.2.30.240/28 16
0.0%
Mainstream Fiber Networks, LLC US Indiana Indianapolis
38.194.4.176/28 16
6.3%
Mainstream Fiber Networks, LLC US Indiana Corydon
38.194.10.240/28 16
0.0%
Mainstream Fiber Networks, LLC US Indiana Corydon
38.194.25.0/28 16
0.0%
Mainstream Fiber Networks, LLC US Indiana Floyds Knobs
38.194.38.0/28 16
0.0%
Mainstream Fiber Networks, LLC US Indiana Fredericksburg
38.194.45.16/28 16
0.0%
Mainstream Fiber Networks, LLC US Indiana Lanesville
38.2.5.128/29 8
0.0%
Mainstream Fiber Networks, LLC US Indiana Oxford
38.2.8.240/29 8
0.0%
Mainstream Fiber Networks, LLC US Indiana Nashville
38.2.15.176/29 8
0.0%
Mainstream Fiber Networks, LLC US Indiana Elizabeth
38.2.30.224/29 8
0.0%
Mainstream Fiber Networks, LLC US Indiana Indianapolis
38.194.4.168/29 8
12.5%
Mainstream Fiber Networks, LLC US Indiana Corydon
38.194.10.232/29 8
0.0%
Mainstream Fiber Networks, LLC US Indiana Corydon
38.194.25.16/29 8
0.0%
Mainstream Fiber Networks, LLC US Indiana Floyds Knobs
38.194.38.16/29 8
0.0%
Mainstream Fiber Networks, LLC US Indiana Fredericksburg
38.194.45.0/29 8
0.0%
Mainstream Fiber Networks, LLC US Indiana Lanesville
38.2.5.136/30 4
0.0%
Mainstream Fiber Networks, LLC US Indiana Oxford
38.2.8.248/30 4
0.0%
Mainstream Fiber Networks, LLC US Indiana Nashville
38.2.15.188/30 4
0.0%
Mainstream Fiber Networks, LLC US Indiana Elizabeth
38.2.30.232/30 4
0.0%
Mainstream Fiber Networks, LLC US Indiana Indianapolis
38.194.4.160/30 4
0.0%
Mainstream Fiber Networks, LLC US Indiana Corydon
38.194.10.228/30 4
0.0%
Mainstream Fiber Networks, LLC US Indiana Corydon
38.194.25.28/30 4
0.0%
Mainstream Fiber Networks, LLC US Indiana Floyds Knobs
38.194.38.28/30 4
0.0%
Mainstream Fiber Networks, LLC US Indiana Fredericksburg
38.194.45.8/30 4
0.0%
Mainstream Fiber Networks, LLC US Indiana Lanesville
38.2.5.142/31 2
0.0%
Mainstream Fiber Networks, LLC US Indiana Oxford
38.2.8.254/31 2
0.0%
Mainstream Fiber Networks, LLC US Indiana Nashville
38.2.15.184/31 2
0.0%
Mainstream Fiber Networks, LLC US Indiana Elizabeth
38.2.30.238/31 2
0.0%
Mainstream Fiber Networks, LLC US Indiana Indianapolis
38.194.4.164/31 2
0.0%
Mainstream Fiber Networks, LLC US Indiana Corydon

BGP Announced Prefixes

Live BGP anomalies →

Prefixes AS18615 actually originates in BGP, observed across our RIPE RIS collectors. This live routing view can differ from the registry allocation above.

PrefixAnnouncement samplesLast seen
147.160.8.0/21 38,426 2026-09-13 01:47:23
74.116.20.0/22 28,743 2026-09-13 01:47:23
163.182.176.0/20 27,089 2026-09-13 01:47:23
38.2.0.0/19 26,771 2026-09-13 01:47:23
38.194.0.0/18 19,627 2026-09-13 01:47:23
23.252.0.0/20 18,131 2026-09-13 01:47:23
206.126.242.0/23 13,205 2026-09-13 01:47:01
149.20.248.0/21 13,103 2026-09-13 01:47:23

Frequently Asked Questions

What is AS18615?

AS18615 is an Autonomous System Number assigned to Mainstream Fiber Networks, LLC. An ASN identifies a network that controls a specific set of IP addresses and determines how traffic is routed across the internet via BGP (Border Gateway Protocol).

How many IP addresses does AS18615 announce?

AS18615 announces 38.4K IPv4 addresses distributed across 111 routed CIDR prefixes. The network is registered in United States.

Who operates AS18615?

AS18615 is operated by Mainstream Fiber Networks, LLC. The organization is based in United States. You can view all IP ranges and related ASNs on the organization page.

What country is AS18615 registered in?

AS18615 is registered in United States. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.

Last updated: 2026-09-13 02:24:09 UTC
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