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Data as of Nov 3, 2026

159.63.176.0/21

No anonymizer space · no proxy exits in 30 days

GTT Communications Inc. · space held by Level 3 Parent, LLC

Announcement
this exact prefix
No RPKI
Announced by
AS3257
Type
Unknown
IPv4 market

Path

1 · Holder
Level 3 Parent, LLC
record created Mar 12, 1992 · reallocated to IPNetZone May 4, 2011
2 · Leased from
IPNetZone
3 · Announced by
AS3257 GTT Communications Inc.
since Jul 2018 · 8.3 yr ago
4 · Use
Unknown

Lineage

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

159.63.176.0/21

From the registry to its use

  1. Mar 12, 1992
    Registry record
    Level 3 Parent, LLC
    Direct Allocation (legacy, pre-1997)
    159.63.0.0/16
  2. Jun 1, 2010– Nov 2, 2026
    Announced
    AS3549 Level 3 Parent, LLC
    as part of 159.63.128.0/18
    159.63.128.0/18
  3. May 4, 2011
    Reallocated
    IPNetZone
    Reallocated
    159.63.176.0/21
  4. May 10, 2011
    Route object
    AS20077 IPNetZone
    RADB route object for AS20077 IPNetZone, maintainer MAINT-AS3257
  5. Feb 1, 2016– Nov 18, 2016
    Announced
    AS20077 IPNetZone
  6. Jul 12, 2018– Nov 2, 2026
    Announced
    AS3257 GTT Communications Inc.
    Internet provider
  7. today
    Leased from
    IPNetZone
    IP broker

Announcements

Less specific

Covering announcements

PrefixOriginTypeProxy exitsHolderRPKI
159.63.128.0/18
since Jun 2010
AS3549Internet provider20
7 always on
Level 3 Parent, LLC
More specific

Announcements inside

PrefixOriginTypeLeased fromHolderRPKI
159.63.179.0/24
since Jun 2013
AS3356UnknownIP broker IPNetZoneLevel 3 Parent, LLC
via IPNetZone
159.63.180.0/24
since Sep 2016
AS3356UnknownIP broker IPNetZoneLevel 3 Parent, LLC
via IPNetZone

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
159.63.0.0/1665,536LVLT-ORG-159-63Level 3 Parent, LLC (LPL-141) · USDirect AllocationMar 12, 1992[email protected]
└ 159.63.176.0/212,048IPNETZONE-5IPNetZone (IPNET-1) · USReallocatedMay 4, 2011[email protected]

Network & registry

AnnouncementRouting historyRPKI & IRRWhois & abuse
Registry

Holder

Organization
Level 3 Parent, LLC
Handle
LPL-141
Range
159.63.0.0/16
Registration type
Direct Allocation
Record created
Mar 12, 1992
Legacy
yes
Reallocated to
IPNetZone (IPNET-1)
Reallocated range
159.63.176.0/21
Reallocated
May 4, 2011
Origin network

AS3257

US
Name
GTT Communications Inc.
Type
Internet provider
Registered
Sep 30, 1994
Domain
gtt.net
Website
www.gtt.net
Industry
Internet Service Provider (ISP)
Spamhaus ASN-DROP
not listed
VPN servers
244