Data as of Nov 9, 2026

63.251.142.0/24

No anonymizer space · no proxy exits in 30 days

Charles River Operation · space held by PF IPV4 Borrower, LLC

Announcement
this exact prefix
No RPKI
Announced by
Type
Hosting
Risk
50 / 100 · Medium
IPv4 market

Path

1 · Holder
record created Dec 2, 1999
2 · Leased from
3 · Announced by
AS64249 Charles River Operation
since Jul 2022 · 4.3 yr ago
4 · Use
Hosting

Lineage

How this block came to its use, oldest first. The whole IPv4 market →

63.251.142.0/24

From the registry to its use

  1. Dec 2, 1999
    Registry record
    PF IPV4 Borrower, LLC
    Direct Allocation
    63.251.128.0 - 63.251.200.255
  2. Apr 18, 2001
    Route object
    AS14637 Stater Bros Markets
    RADB route object for AS14637 Stater Bros Markets, maintainer MAINT-AS1828
  3. May 9, 2005– today
    Announced
    AS14742 Unitas Global
    as part of 63.251.128.0/20
    63.251.128.0/20
  4. Jul 27, 2022– today
    Announced
    AS64249 Charles River Operation
    Hosting
  5. Jul 29, 2022
    Route object
    AS64249 Charles River Operation
    ALTDB route object for AS64249 Charles River Operation, maintainer MAINT-TOWARDEX
  6. Jul 29, 2022
    Route object
    AS64249 Charles River Operation
    RADB route object for AS64249 Charles River Operation, maintainer MAINT-AS27552
  7. today
    Leased from
    IPv4.Global
    IP broker

Announcements

Less specific

Covering announcements

PrefixOriginTypeLeased fromHolderRPKI
63.251.128.0/20
since May 2005
AS14742UnknownIP broker IPv4.GlobalPF IPV4 Borrower, LLC

Registrations in this block

The registry's network records over the announcement: those covering it, widest first, then every record inside it, under its parent.

RangeAddressesNetnameHolderTypeCreatedAbuse contact
63.251.128.0 - 63.251.200.25518,688UG-210PF IPV4 Borrower, LLC (PIHL-4) · USDirect AllocationDec 2, 1999ipinfo@hilcostreambank.com
└ 63.251.142.0/24256INAP-BSN-ENDOFFICE-63-251-142-0unknownReassignedJul 5, 2022ipinfo@hilcostreambank.com
via UG-210

A contact marked “via” is the registry's: the record names none of its own, so the registry hands down its parent's.

Network & registry

IPv4 market

Holder

Organization
PF IPV4 Borrower, LLC
Handle
PIHL-4
Range
63.251.128.0 - 63.251.200.255
Registration type
Direct Allocation
Record created
Dec 2, 1999
Origin network

AS64249

US
Name
Charles River Operation
Type
Hosting
Registered
Apr 8, 2016
Domain
endoffice.com
Website
endoffice.com
Industry
Software Development
Spamhaus ASN-DROP
not listed
VPN servers
4