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Data as of Nov 9, 2026

198.104.208.0/20

Anonymizer · ISP proxy

Level 3 Parent, LLC · space held by NTT America, Inc.

Announcement
this exact prefix
RPKI valid
Announced by
AS10753
Type
ISP proxy
Risk
90 / 100 · Critical
Recent change
New origin Oct 10, 2026
its first announcement on record
IPv4 market

Path

Announced by AS10753 since Oct 10, 2026 · 4 wk ago
1 · Holder
NTT America, Inc.
record created Mar 26, 1993
2 · Leased from
Rackdog
for its owner NTT America, Inc.
3 · Announced by
AS10753 Level 3 Parent, LLC
since Oct 10, 2026 · 4 wk ago
4 · Use
ISP proxy
anonymizer space, operator not named

Operators, sellers and brokers

Leased from

IP brokers

NameIn 198.104.208.0/20/24s
Rackdog
4,096100%
16
Leased from

Owners leasing their own space

NameIn 198.104.208.0/20/24s
NTT America, Inc.
4,096100%
16

Lineage

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

198.104.208.0/20

From the registry to its use

  1. Mar 26, 1993
    Registry record
    NTT America, Inc.
    Direct Allocation (legacy, pre-1997)
    198.104.0.0/16
  2. May 9, 2005– Jun 27, 2016
    Announced
    AS2914 NTT America, Inc.
    as part of 198.104.0.0/16
    198.104.0.0/16
  3. Oct 2, 2016– today
    Announced
    AS2914 NTT America, Inc.
    as part of 198.104.0.0/16
    198.104.0.0/16
  4. Oct 8, 2026
    Assigned
    RCN
    Reassigned
    198.104.208.0/20
  5. Oct 10, 2026– today
    Announced
    AS10753 Level 3 Parent, LLC
    Internet provider
  6. Oct 19, 2026
    Route object
    AS3320 Deutsche Telekom AG
    NTTCOM route object for AS3320 Deutsche Telekom AG, maintainer MAINT-NTTCOM-BB
  7. Oct 19, 2026
    Route object
    AS3491 PCCW Global (HK) Ltd.
    NTTCOM route object for AS3491 PCCW Global (HK) Ltd., maintainer MAINT-NTTCOM-BB
  8. Oct 19, 2026
    Route object
    AS4826 Vocus Connect International Backbone
    NTTCOM route object for AS4826 Vocus Connect International Backbone, maintainer MAINT-NTTCOM-BB
  9. Oct 19, 2026
    Route object
    AS6079 RCN
    NTTCOM route object for AS6079 RCN, maintainer MAINT-NTTCOM-BB
  10. Oct 19, 2026
    Route object
    AS7029 Windstream Communications LLC
    NTTCOM route object for AS7029 Windstream Communications LLC, maintainer MAINT-NTTCOM-BB
  11. Oct 19, 2026
    Route object
    AS7459 Grande Communications Networks, LLC
    NTTCOM route object for AS7459 Grande Communications Networks, LLC, maintainer MAINT-NTTCOM-BB
  12. Oct 19, 2026
    Route object
    AS10753 Level 3 Parent, LLC
    NTTCOM route object for AS10753 Level 3 Parent, LLC, maintainer MAINT-NTTCOM-BB
  13. Oct 19, 2026
    Route object
    AS11404 Wave Broadband
    NTTCOM route object for AS11404 Wave Broadband, maintainer MAINT-NTTCOM-BB
  14. Oct 19, 2026
    Route object
    AS20115 Charter Communications LLC
    NTTCOM route object for AS20115 Charter Communications LLC, maintainer MAINT-NTTCOM-BB
  15. Oct 19, 2026
    Route object
    AS22773 Cox Communications Inc.
    NTTCOM route object for AS22773 Cox Communications Inc., maintainer MAINT-NTTCOM-BB
  16. Oct 19, 2026
    Route object
    AS42689 Glide Student & Residential Limited
    NTTCOM route object for AS42689 Glide Student & Residential Limited, maintainer MAINT-NTTCOM-BB
  17. Oct 19, 2026
    Route object
    AS398465 Rackdog, LLC
    NTTCOM route object for AS398465 Rackdog, LLC, maintainer MAINT-NTTCOM-BB

Announcements

Less specific

Covering announcements

PrefixOriginTypeHolderRPKI
198.104.0.0/16
since Oct 2016
AS2914Internet providerNTT America, Inc.

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
198.104.0.0/1665,536NTTA-198-104NTT America, Inc. (NTTAM-1) · USDirect AllocationMar 26, 1993abuse@ntt.net
└ 198.104.208.0/204,096RCN-198-104-208RCN (C11732720) · USReassignedOct 8, 2026abuse@ntt.net
via NTTA-198-104

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

AnnouncementRouting historyRPKI & IRRWhois & abuse
IPv4 market

Holder

Holder in the market →
Organization
NTT America, Inc.
Handle
NTTAM-1
Range
198.104.0.0/16
Registration type
Direct Allocation
Record created
Mar 26, 1993
Legacy
yes
Origin network

AS10753

US
Name
Level 3 Parent, LLC
Type
Internet provider
Registered
Nov 18, 1997
Domain
level3.com
Industry
Hosting and Cloud Provider
Spamhaus ASN-DROP
not listed