Proofpoint, Inc.

Data as of 2026-08-09
GLEIF verified
Complete entity footprint
2 linked clusters · 420 netblocks · 78,513 IPv4 addresses · 101 IPv6 prefixes
This organisation's clusters combined by evidence — shared operating domain pphosted.com — not name similarity, so genuinely different organisations that share a name are excluded.
View the full entity page →
LEI
529900C5FODDK0WSR085
Registered name
Proofpoint, Inc.
Jurisdiction
US-DE
Ultimate parent
No parent on file in GLEIF
Cluster stats
Netblocks193 · 42,840 IPv4 addresses
IPv6 23 prefixes (largest 2605:b040::/32)
Registered in United States (159) · United Kingdom (7) · Netherlands (4) · Germany (3) · Israel (1)
Cluster ID218217819
RegistryBGP
Owner jurisdictionUS-DE
Customersfind customers using this network →
Evidence & provenance ?
Attribution GLEIF legal-entity match
Legal identityLEI 529900C5FODDK0WSR085
Shared handles clustered on 30 shared RIR contact/maintainer handles
Registry names 8 distinct registrant names across these blocks
full provenance (JSON) → · how attribution works · report an issue

Footprint over time

7 weekly snapshots · JSON
197 +12 netblocks since 2026-07-05
2026-07-05 peak 197 2026-08-09

IP Ranges (193)

showing 50 of 193 — see all — ⬇ export CSV
CIDR Org name Registry Status Confidence
35.89.44.32/27 Proofpoint, Inc. ARIN ASSIGNMENT ● high
44.202.169.32/27 Proofpoint, Inc. ARIN ASSIGNMENT ● high
66.159.224.0/24 Proofpoint, Inc. BGP ANNOUNCED ● high
66.159.224.0/19 Proofpoint, Inc. ARIN DIRECT ALLOCATION ● high
66.159.225.0/24 Proofpoint, Inc. BGP ANNOUNCED ● high
66.159.227.0/24 Proofpoint, Inc. BGP ANNOUNCED ● high
66.159.228.0/24 Proofpoint, Inc. BGP ANNOUNCED ● high
66.159.232.0/24 Proofpoint, Inc. BGP ANNOUNCED ● high
66.159.233.0/24 Proofpoint, Inc. BGP ANNOUNCED ● high
66.159.234.0/24 Proofpoint, Inc. BGP ANNOUNCED ● high
66.159.235.0/24 Proofpoint, Inc. BGP ANNOUNCED ● high
66.159.236.0/24 Proofpoint, Inc. BGP ANNOUNCED ● high
66.159.237.0/24 Proofpoint, Inc. BGP ANNOUNCED ● high
66.159.238.0/23 Proofpoint, Inc. BGP ANNOUNCED ● high
66.159.240.0/24 Proofpoint, Inc. BGP ANNOUNCED ● high
66.159.241.0/24 Proofpoint, Inc. BGP ANNOUNCED ● high
66.159.243.0/24 Proofpoint, Inc. BGP ANNOUNCED ● high
66.159.244.0/24 Proofpoint, Inc. BGP ANNOUNCED ● high
66.159.245.0/24 Proofpoint, Inc. BGP ANNOUNCED ● high
66.159.246.0/24 Proofpoint, Inc. BGP ANNOUNCED ● high
66.159.247.0/24 Proofpoint, Inc. BGP ANNOUNCED ● high
66.159.248.0/23 Proofpoint, Inc. BGP ANNOUNCED ● high
66.159.250.0/23 Proofpoint, Inc. BGP ANNOUNCED ● high
66.159.250.0/24 Proofpoint, Inc. BGP ANNOUNCED ● high
66.159.251.0/24 Proofpoint, Inc. BGP ANNOUNCED ● high
66.159.252.0/24 Proofpoint, Inc. BGP ANNOUNCED ● high
66.159.253.0/24 Proofpoint, Inc. BGP ANNOUNCED ● high
66.159.254.0/24 Proofpoint, Inc. BGP ANNOUNCED ● high
66.159.255.0/24 Proofpoint, Inc. BGP ANNOUNCED ● high
67.231.144.0/20 Proofpoint, Inc. ARIN DIRECT ALLOCATION ● high
67.231.144.0/24 Proofpoint, Inc. BGP ANNOUNCED ● high
67.231.145.0/24 Proofpoint, Inc. BGP ANNOUNCED ● high
67.231.146.0/24 Proofpoint, Inc. BGP ANNOUNCED ● high
67.231.147.0/24 Proofpoint, Inc. BGP ANNOUNCED ● high
67.231.148.0/24 Proofpoint, Inc. BGP ANNOUNCED ● high
67.231.149.0/24 Proofpoint, Inc. BGP ANNOUNCED ● high
67.231.150.0/24 Proofpoint, Inc. BGP ANNOUNCED ● high
67.231.151.0/24 Proofpoint, Inc. BGP ANNOUNCED ● high
67.231.152.0/24 Proofpoint, Inc. BGP ANNOUNCED ● high
67.231.153.0/24 Proofpoint, Inc. BGP ANNOUNCED ● high
67.231.154.0/24 Proofpoint, Inc. BGP ANNOUNCED ● high
67.231.155.0/24 Proofpoint, Inc. BGP ANNOUNCED ● high
67.231.156.0/24 Proofpoint, Inc. BGP ANNOUNCED ● high
67.231.157.0/24 Proofpoint, Inc. BGP ANNOUNCED ● high
67.231.158.0/24 Proofpoint, Inc. BGP ANNOUNCED ● high
67.231.159.0/24 Proofpoint, Inc. BGP ANNOUNCED ● high
91.207.212.0/23 Proofpoint, Inc. BGP ANNOUNCED ● high
91.209.104.0/24 Proofpoint, Inc. RIPE ASSIGNED PI ● high
143.55.144.0/24 Proofpoint, Inc. BGP ANNOUNCED ● high
143.55.145.0/24 Proofpoint, Inc. BGP ANNOUNCED ● high

IPv6 ranges (23)

showing the 15 largest allocations
CIDR
2605:b040::/32
2a0a:2b00::/32
2620:0:2900::/44
2620:100:9000::/44
2a0a:2b00:10::/44
2a0a:2b00::/44
2620:100:9000::/47
2620:100:9004::/47
2620:100:9008::/47
2620:0:2900::/48
2620:0:2901::/48
2620:0:2902::/48
2620:100:900c::/48
2620:100:900d::/48
2001:4d78:400:10e::/64

Domains hosted in this network

what's this?
montecito.bank proofpoint.com cpb.bank pphosted.com ppe-hosted.com cloudmark.com svb.com bankofamerica.com gpphosted.com

Network trust

what's this?
RPKI hygiene: B how networks compare →
92.4% of checked blocks have valid RPKI ROA coverage (182 of 197)
Possible discrepancies (4)

These blocks are registered to Proofpoint, Inc. but cryptographically authorized for a different, unrelated network (4 distinct holders) — often M&A history, multi-homing, or outsourced/managed hosting, occasionally worth a closer look.

2a0a:2b00::/32 /32 authorized for AS51219 — K2 Integration JSC
209.249.172.0/23 /23 authorized for AS6461 — Zayo Bandwidth
143.55.151.0/24 /24 authorized for AS14618 — Amazon.com, Inc.
216.200.144.0/24 /24 authorized for AS53294 — Fox News Channel

NIC Handles

AB34802-RIPE AS13916 AS22843 AS26211 AS52129 AS52129 DUMY-RIPE DUMY-RIPE EQUINIX-FULFIL-MNT EQUINIX-MNT LEVEL3-MNT NETWO2061-ARIN +18 more