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Data as of Nov 3, 2026

63.76.75.64/27

No anonymizer space · no proxy exits in 30 days

Isocentric Networks, Incorporated · space held by Verizon Business

Announcement
63.76.74.0/23
No RPKI
Announced by
AS19885
Type
Hosting
Risk
50 / 100 · Medium

Announcements

Less specific

Covering announcements

PrefixOriginTypeProxy exitsHolderRPKI
63.64.0.0/12AS701Internet provider323
44 always on
Verizon Business

Registrations in this block

The registry's network records over this block, widest first, each under its parent.

RangeAddressesNetnameHolderTypeCreatedAbuse contact
63.64.0.0/104,194,304UUNET63Verizon Business (MCICS) · USDirect AllocationJan 22, 1999[email protected]
└ 63.76.74.0/23512UU-63-76-74-D1Isocentric Networks Inc. (ISOC) · USReallocatedMar 19, 2001—
└ 63.76.75.64/2732NETBLK-ISOCEN-I2E-2-362unknown———

Network & registry

AnnouncementRouting historyWhois & abuse
Announced by

Covering announcement 63.76.74.0/23

Prefix
63.76.74.0/23
Announced by
AS19885 Isocentric Networks, Incorporated
Type
Hosting
RPKI
No RPKI
Netname
UU-63-76-74-D1
Registrant
Isocentric Networks Inc.
RIR
ARIN
IPv4 market

Holder

Holder in the market →
Organization
Verizon Business
Handle
MCICS
Range
63.64.0.0/10
Registration type
Direct Allocation
Record created
Jan 22, 1999
Reallocated to
Isocentric Networks Inc. (ISOC)
Reallocated range
63.76.74.0/23
Reallocated
Mar 19, 2001
Origin network

AS19885

US
Name
Isocentric Networks, Incorporated
Type
Hosting
Registered
Feb 26, 2001
Domain
isocentric.com
Industry
Hosting and Cloud Provider
Spamhaus ASN-DROP
not listed