Data as of Nov 12, 2026
63.128.0.0/22
No anonymizer space · no proxy exits in 30 daysLevel 3 Parent, LLC · space held by CenturyLink Communications, LLC
Announcements
Less specific
Covering announcements
| Prefix | Origin | Type | Holder | RPKI |
|---|---|---|---|---|
| 63.128.0.0/18 since Jan 2021 | AS3561 | Internet provider | CenturyLink Communications, LLC | |
| 63.128.0.0/16 since May 2026 | AS3561 | Internet provider | CenturyLink Communications, LLC |
More specific
Announcements inside
| Prefix | Origin | Type | Holder | RPKI |
|---|---|---|---|---|
| 63.128.1.0/24 since Aug 2023 | AS203 | Unknown | CenturyLink Communications, LLC via Blackbaud, 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.
| Range | Addresses | Netname | Holder | Type | Created | Abuse contact |
|---|---|---|---|---|---|---|
| 63.128.0.0/15 | 131,072 | CENTURYLINK-LEGACY-SAVVIS-BLK236 | CenturyLink Communications, LLC (CCL-534) · US | Direct Allocation | Nov 30, 1999 | abuse@ |
| └ 63.128.0.0/22 | 1,024 | SAVV-S259964-14 | Blackbaud, Inc. (BLACKB-4) · US | Reallocated | Oct 19, 2010 | SDO-ARIN@ |
Network & registry
IPv4 market
Holder
- Organization
- CenturyLink Communications, LLC
- Handle
- CCL-534
- Range
- 63.
128. 0. 0/ 15 - Registration type
- Direct Allocation
- Record created
- Nov 30, 1999
- Reallocated to
- Blackbaud, Inc. (BLACKB-4)
- Reallocated range
- 63.
128. 0. 0/ 22 - Reallocated
- Oct 19, 2010
Origin network
AS203
US
- Name
- Level 3 Parent, LLC
- Type
- Internet provider
- Registered
- Jun 5, 2002
- Domain
- level3.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
- Rotating
- First seen
- Jan 2021
- Current origin since
- May 2023 · 3.5 yr
- Origin networks
- 2
- Last change of origin
- Jun 2024
Recorded history
History
- Handoffs
- 2
Whois
Registration for this announcement
- Range
- 63.
128. 0. 0/ 22 - Netname
- SAVV-S259964-14
- Registrant
- Blackbaud, Inc.
- Organization
- Blackbaud, Inc. (BLACKB-4)
- Org address
- 2000 Daniel Island Drive, Charleston, SC, 29492
- Org country
- US
- Type
- Reallocated
- Handle
- NET-63-128-0-0-3
- Parent
- NET-63-128-0-0-2
- Created
- Oct 19, 2010
- RIR
- ARIN
- Country
- US
- Delegated
- Nov 30, 1999
- Status
- assigned
Report abuse
Abuse contact
- SDO-ARIN@
blackbaud. com - Name
- Network Operations Center
- Phone
- +1-512-420-4500
- Handle
- NOC12595-ARIN