Mainstream Fiber Networks, LLC

BGP inherited
Cluster stats
Netblocks18 · 42,869 IPv4 addresses
Registered in United States (12) · United Kingdom (2)
Cluster ID209571605
RegistryBGP
Customersfind customers using this network →
Evidence & provenance ?
Attribution BGP parent (inherited)
Shared handles clustered on 16 shared RIR contact/maintainer handles
Registry names 5 distinct registrant names across these blocks
full provenance (JSON) → · how attribution works

Footprint over time

5 weekly snapshots · JSON
23 0 netblocks since 2026-07-05
2026-07-05 peak 23 2026-07-19

IP Ranges (18)

⬇ export CSV
CIDR Org name Registry Status Confidence
23.252.0.0/20 Mainstream Fiber Networks, LLC BGP ANNOUNCED ● high
23.252.0.0/20 Mainstream Fiber Networks, LLC ARIN DIRECT ALLOCATION ● high
38.2.0.0/19 Mainstream Fiber Networks, LLC BGP ANNOUNCED ● high
38.194.0.0/18 Mainstream Fiber Networks, LLC BGP ANNOUNCED ● high
74.116.20.0/22 Mainstream Fiber Networks, LLC BGP ANNOUNCED ● high
147.160.8.0/21 Mainstream Fiber Networks, LLC BGP ANNOUNCED ● high
149.20.248.0/21 Mainstream Fiber Networks, LLC BGP ANNOUNCED ● high
149.112.11.17/32 Mainstream Fiber Networks PEERINGDB ASSIGNED ● high
163.182.176.0/20 Mainstream Fiber Networks, LLC BGP ANNOUNCED ● high
206.53.139.39/32 Mainstream Fiber Networks PEERINGDB ASSIGNED ● high
206.53.202.94/32 Mainstream Fiber Networks PEERINGDB ASSIGNED ● high
206.126.242.0/23 Mainstream Fiber Networks, LLC BGP ANNOUNCED ● high
2001:504:45:f3e8::39/128 Mainstream Fiber Networks PEERINGDB ASSIGNED ● high
2001:504:61::48b7:0:1/128 Mainstream Fiber Networks PEERINGDB ASSIGNED ● high
2001:504:102::48b7:0:1/128 Mainstream Fiber Networks PEERINGDB ASSIGNED ● high
2607:1c80::/32 Mainstream Fiber Networks, LLC BGP ANNOUNCED ● high
80.85.208.0/24 MAINSTREAM-AWS RIPE ASSIGNED PA ● low
80.85.213.0/25 MAINSTREAM-PBX RIPE ASSIGNED PA ● low

Network trust

what's this?
RPKI hygiene: C how networks compare →
77.8% of checked blocks have valid RPKI ROA coverage (14 of 18)
No discrepancies found among checked blocks.

NIC Handles

ABUSE8911-ARIN AS18615 AS18615 DUMY-RIPE DUMY-RIPE GABRI2-ARIN GABRI2-ARIN MAINSTREAMD-MNT MFNL-2 NBL12-ARIN NBL12-ARIN SERPI-ARIN +4 more