X4B

Handle
Cluster stats
Netblocks8 · 2,041 IPv4 addresses
All fragments 10 blocks across 3 clusters
Cluster ID210260970
RegistryAPNIC
Customersfind customers using this network →
Evidence & provenance ?
Attribution RIR handle
Shared handles clustered on 7 shared RIR contact/maintainer handles
Registry names 2 distinct registrant names across these blocks
full provenance (JSON) → · how attribution works

Footprint over time

5 weekly snapshots · JSON
8 0 netblocks since 2026-07-05
2026-07-05 peak 8 2026-07-19

IP Ranges (8)

⬇ export CSV
CIDR Org name Registry Status Confidence
103.77.224.0/24 X4B BGP ANNOUNCED ● high
103.100.107.0/24 X4B BGP ANNOUNCED ● high
103.249.70.0/24 X4B BGP ANNOUNCED ● high
103.249.71.0/24 X4B BGP ANNOUNCED ● high
103.77.224.0/24 X4B APNIC ALLOCATED PORTABLE ● low
103.100.107.0/24 X4B APNIC ALLOCATED PORTABLE ● low
103.249.70.0/23 X4B APNIC ALLOCATED PORTABLE ● low
2406:4b40::/32 X4B APNIC ALLOCATED PORTABLE ● low

Possibly related to this organisation

what's this?
Same name family
Separately-registered clusters whose names share “X4B” — often per-country or per-system registrations of the same brand, occasionally a different organisation sharing the name. Not counted in this organisation's own footprint.

Network trust

what's this?
RPKI hygiene: C how networks compare →
62.5% of checked blocks have valid RPKI ROA coverage (5 of 8)
Possible discrepancies (2)

These blocks are registered to X4B but cryptographically authorized for a different, unrelated network (1 distinct holder) — often M&A history, multi-homing, or outsourced/managed hosting, occasionally worth a closer look.

103.77.224.0/24 /24 authorized for AS20473 — The Constant Company, LLC
103.77.224.0/24 /24 authorized for AS20473 — The Constant Company, LLC

NIC Handles

APNIC-HM AS136165 AX110-AP MAINT-AU-X4B ORG-XA1-AP XA71-AP XA71-AP