Data as of Nov 13, 2026
199.6.20.0/24
No anonymizer space · no proxy exits in 30 daysCenturyLink Communications, LLC · space held by PTC 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 |
|---|---|---|---|---|---|---|
| 199.6.16.0/20 | 4,096 | NETBLK-PTC | PTC Inc. (PTC-5-Z) · US | Direct Allocation | Sep 14, 1993 | curtin@ |
| └ 199.6.20.0/22 | 1,024 | NETBLK-PTC-1 | PTC Inc. (PTC-5) · US | Reassigned | Dec 13, 1993 | curtin@ |
Network & registry
Registry
Holder
- Organization
- PTC Inc.
- Handle
- PTC-5-Z
- Range
- 199.
6. 16. 0/ 20 - Registration type
- Direct Allocation
- Record created
- Sep 14, 1993
- Legacy
- yes
Origin network
AS3561
US
- Name
- CenturyLink Communications, LLC
- Type
- Internet provider
- Registered
- Oct 7, 1998
- Domain
- lumen.com
- Website
- www.lumen.com/
- Industry
- Internet Service Provider (ISP)
- Spamhaus ASN-DROP
- not listed
Routing timeline
Who has announced this prefix
Summary
Routing history
- Pattern
- Stable
- First seen
- Jan 2015
- Current origin since
- Jan 2015 · 12 yr
- Origin networks
- 1
Whois
Registration for this announcement
- Range
- 199.
6. 20. 0/ 22 - Netname
- NETBLK-PTC-1
- Registrant
- PTC Inc.
- Organization
- PTC Inc. (PTC-5)
- Org address
- 121 Seaport Blvd, Boston, MA, 02210
- Org country
- US
- Type
- Reassigned
- Handle
- NET-199-6-20-0-1
- Parent
- NET-199-6-16-0-1
- Created
- Dec 13, 1993
- RIR
- ARIN
- Country
- US
- Delegated
- Sep 14, 1993
- Status
- assigned
Report abuse
Abuse contact
- curtin@
ptc. com - Name
- Curtin, Michael
- Phone
- +1-781-370-5619
- Handle
- CURTI54-ARIN