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Data as of Nov 9, 2026

147.125.216.0/21

Anonymizer · ISP proxy

Frontier Communications of America, Inc. · space held by International Institute for Applied Systems Analysis

Announcement
this exact prefix
RPKI valid
Announced by
AS5650
Type
ISP proxy
Risk
90 / 100 · Critical
IPv4 market

Path

1 · Holder
International Institute for Applied Systems Analysis
2 · Leased from
IPXO
for its owner International Institute for Applied Systems Analysis
3 · Announced by
AS5650 Frontier Communications of America, Inc.
since Oct 2025 · 13 mo ago
4 · Use
ISP proxy
anonymizer space, operator not named

Operators, sellers and brokers

Leased from

IP brokers

NameIn 147.125.216.0/21/24s
IPXO
2,048100%
8
Leased from

Owners leasing their own space

NameIn 147.125.216.0/21/24s
International Institute for Applied Systems Analysis
2,048100%
8

Lineage

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

147.125.216.0/21

From the registry to its use

  1. Oct 3, 2025– Nov 8, 2026
    Announced
    AS5650 Frontier Communications of America, Inc.
    Internet provider
  2. Oct 10, 2025
    Route object
    IPXO
    RIPE route object for AS5650 Frontier Communications of America, Inc., maintainer NETUTILS-MNT
  3. Oct 10, 2025
    Route object
    IPXO
    RADB route object for AS5650 Frontier Communications of America, Inc., maintainer MAINT-AS834
  4. today
    Registry record
    International Institute for Applied Systems Analysis
    LEGACY
    147.125.0.0/16
  5. today
    Leased from
    IPXO
    IP broker

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
147.125.0.0/1665,536IIASAInternational Institute for Applied Systems Analysis (ORG-IIFA6-RIPE) · ATLEGACY—cert@aco.net
└ 147.125.128.0/1732,768IIASAInternet Utilities Europe and Asia Limited (ORG-IL687-RIPE) · GBLEGACYAug 14, 2025report@abuseradar.com
└ 147.125.216.0/212,048NET-147-125-216-0-21unknownLEGACYOct 10, 2025report@abuseradar.com

Network & registry

AnnouncementRouting historyRPKI & IRRWhois & abuse
IPv4 market

Holder

Holder in the market →
Organization
International Institute for Applied Systems Analysis
Handle
ORG-IIFA6-RIPE
Range
147.125.0.0/16
Registration type
LEGACY
Legacy
yes
Origin network

AS5650

US
Name
Frontier Communications of America, Inc.
Type
Internet provider
Registered
Jul 25, 1995
Domain
verizonbusiness.com
Website
www.frontier.com
Industry
Internet Service Provider (ISP)
Spamhaus ASN-DROP
not listed