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Data as of Nov 3, 2026

63.251.56.0/24

No anonymizer space · no proxy exits in 30 days

SymbioSystems LLC · space held by PF IPV4 Borrower, LLC

Announcement
this exact prefix
No RPKI
Announced by
AS25985
Type
Business
Risk
0 / 100 · Low
IPv4 market

Path

1 · Holder
PF IPV4 Borrower, LLC
record created Dec 2, 1999
2 · Leased from
IPv4.Global
3 · Announced by
AS25985 SymbioSystems LLC
since May 2018 · 8.5 yr ago
4 · Use
Business

Lineage

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

63.251.56.0/24

From the registry to its use

  1. Dec 2, 1999
    Registry record
    PF IPV4 Borrower, LLC
    Direct Allocation
    63.251.16.0 - 63.251.85.255
  2. May 9, 2005– today
    Announced
    AS14743 Unitas Global
    as part of 63.251.48.0/20
    63.251.48.0/20
  3. Apr 12, 2017– May 12, 2018
    Announced
    AS396068
  4. May 1, 2018– today
    Announced
    AS25985 SymbioSystems LLC
    Business
  5. Apr 4, 2022
    Route object
    AS25985 SymbioSystems LLC
    ALTDB route object for AS25985 SymbioSystems LLC, maintainer MAINT-AS7034
  6. today
    Leased from
    IPv4.Global
    IP broker

Announcements

Less specific

Covering announcements

PrefixOriginTypeLeased fromHolderRPKI
63.251.48.0/20
since May 2005
AS14743UnknownIP 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
63.251.16.0 - 63.251.85.25517,920UG-210PF IPV4 Borrower, LLC (PIHL-4) · USDirect AllocationDec 2, 1999[email protected]
└ 63.251.56.160/2732INAP-SFO-PASSPORTCAP-22562unknown———
└ 63.251.56.192/2732INAP-SFO-MULTIFAMILY-4020unknown———

Network & registry

AnnouncementRouting historyRPKI & IRRWhois & abuse
Origin network

AS25985

US
Name
SymbioSystems LLC
Type
Business
Registered
Feb 1, 2013
Domain
symbiosystems.com
Industry
Service
Spamhaus ASN-DROP
not listed