Bertram Holdings Limited

Bertram Communications LLC
Data as of 2026-08-16
GLEIF verified
LEI
213800VYJGTS51AVI484
Registered name
Bertram Holdings Limited
Jurisdiction
GI
Ultimate parent
No parent on file in GLEIF
Cluster stats
Netblocks24 · 37,893 IPv4 addresses
IPv6 5 prefixes (largest 2605:bbc0::/32)
Registered in United States (30) · Germany (1)
All fragments 50 blocks across 8 clusters
Cluster ID222397911
RegistryBGP
Owner jurisdictionGI
Customersfind customers using this network →
Evidence & provenance ?
Attribution GLEIF legal-entity match
Legal identityLEI 213800VYJGTS51AVI484
Shared handles clustered on 14 shared RIR contact/maintainer handles
Registry names 4 distinct registrant names across these blocks
full provenance (JSON) → · how attribution works · report an issue

Footprint over time

8 weekly snapshots · JSON
40 +16 netblocks since 2026-07-05
2026-07-05 peak 40 2026-08-16

IP Ranges (24)

⬇ export CSV
CIDR Org name Registry Status Confidence
97.107.32.0/20 Bertram Communications LLC BGP ANNOUNCED ● high
104.192.244.0/22 Bertram Communications LLC BGP ANNOUNCED ● high
134.195.20.0/22 Bertram Communications LLC BGP ANNOUNCED ● high
139.60.8.0/21 Bertram Communications LLC ARIN DIRECT ALLOCATION ● high
162.210.60.0/22 Bertram Communications LLC BGP ANNOUNCED ● high
172.98.220.0/22 Bertram Communications LLC BGP ANNOUNCED ● high
173.242.80.0/20 Bertram Communications LLC BGP ANNOUNCED ● high
192.200.136.0/21 Bertram Communications LLC ARIN DIRECT ALLOCATION ● high
199.167.212.0/22 Bertram Communications LLC ARIN DIRECT ALLOCATION ● high
206.126.208.0/20 Bertram Communications LLC BGP ANNOUNCED ● high
208.115.136.1/32 Bertram Communications PEERINGDB ASSIGNED ● high
209.103.224.0/19 Bertram Communications LLC BGP ANNOUNCED ● high
216.127.192.0/19 Bertram Communications LLC BGP ANNOUNCED ● high
216.127.219.0/24 Bertram Communications LLC BGP ANNOUNCED ● high
216.127.220.0/24 Bertram Communications LLC BGP ANNOUNCED ● high
216.127.221.0/24 Bertram Communications LLC BGP ANNOUNCED ● high
216.127.222.0/24 Bertram Communications LLC BGP ANNOUNCED ● high
216.127.223.0/24 Bertram Communications LLC BGP ANNOUNCED ● high
2001:504:0:4:0:3:6001:1/128 Bertram Communications PEERINGDB ASSIGNED ● high
2605:bbc0::/32 Bertram Communications LLC ARIN DIRECT ALLOCATION ● high
2606:3d00::/32 Bertram Communications LLC BGP ANNOUNCED ● high
2606:ab80::/32 Bertram Communications LLC ARIN DIRECT ALLOCATION ● high
2607:580::/32 Bertram Communications LLC BGP ANNOUNCED ● high
212.86.140.32/30 BERTRAM-NET RIPE ASSIGNED PA ● low

IPv6 ranges (5)

CIDR
2605:bbc0::/32
2606:3d00::/32
2606:ab80::/32
2607:580::/32
2001:504:0:4:0:3:6001:1/128

Network trust

what's this?
RPKI hygiene: B how networks compare →
92.5% of checked blocks have valid RPKI ROA coverage (37 of 40)
No discrepancies found among checked blocks.

NIC Handles

ABUSE2827-ARIN AS36001 AS36001 AS393429 BCL-319 DUMY-RIPE DUMY-RIPE NOC32811-ARIN NOC32811-ARIN NOC33540-ARIN SGHNET-MNT WRIGH677-ARIN +2 more