Data as of Nov 10, 2026
63.76.74.0/23
No anonymizer space · no proxy exits in 30 daysIsocentric Networks, Incorporated · space held by Verizon Business
Announcements
Less specific
Covering announcements
| Prefix | Origin | Type | Proxy exits | Holder | RPKI |
|---|---|---|---|---|---|
| 63.64.0.0/12 | AS701 | Internet provider | 315 38 always on | Verizon Business |
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.
| Range | Addresses | Netname | Holder | Type | Created | Abuse contact |
|---|---|---|---|---|---|---|
| 63.64.0.0/10 | 4,194,304 | UUNET63 | Verizon Business (MCICS) · US | Direct Allocation | Jan 22, 1999 | abuse@ |
| └ 63.76.74.0/23 | 512 | UU-63-76-74-D1 | Isocentric Networks Inc. (ISOC) · US | Reallocated | Mar 19, 2001 | — |
| └ 63.76.75.64/27 | 32 | NETBLK-ISOCEN-I2E-2-362 | unknown | — | — | — |
Network & registry
IPv4 market
Holder
- 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
Routing timeline
Covering aggregate above, the prefix's own history below
Summary
Routing history
- Pattern
- Stable
- First seen
- May 2005
- Current origin since
- May 2005 · 22 yr
- Origin networks
- 1
Whois
Registration for this announcement
- Range
- 63.
76. 74. 0/ 23 - Netname
- UU-63-76-74-D1
- Registrant
- Isocentric Networks Inc.
- Organization
- Isocentric Networks Inc. (ISOC)
- Org address
- 100 West 5th Strret, Tulsa, OK, 74103-4240
- Org country
- US
- Type
- Reallocated
- Handle
- NET-63-76-74-0-1
- Parent
- NET-63-64-0-0-1
- Created
- Mar 19, 2001
- RIR
- ARIN
- Country
- US
- Delegated
- Jan 22, 1999
- Status
- assigned
Report abuse
Abuse contact
- abuse-mail@
verizonbusiness. com - Name
- abuse
- Phone
- +1-800-900-0241
- Handle
- ABUSE3-ARIN