Data as of Nov 5, 2026
12.176.90.0/24
No anonymizer space · no proxy exits in 30 daysNektar Therapeutics · space held by AT&T Enterprises, LLC
Announcements
Less specific
Covering announcements
| Prefix | Origin | Type | Leased from | Proxy exits | Holder | RPKI |
|---|---|---|---|---|---|---|
| 12.128.0.0/9 | AS7018 | Residential | IP broker Rackdog (part) | 5,205 282 always on | AT&T Enterprises, LLC | |
| 12.0.0.0/8 | AS7018 | Residential | 13,299 722 always on | AT&T Enterprises, LLC |
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 |
|---|---|---|---|---|---|---|
| 12.0.0.0/8 | 16,777,216 | ATT | AT&T Enterprises, LLC (AEL-360) · US | Direct Allocation | Aug 23, 1983 | abuse@ |
| └ 12.176.80.0/20 | 4,096 | ATTSVCM-12-176-80-0 | AT&T Services, Inc. (ATTW) · US | Reallocated | Dec 15, 2003 | — |
| └ 12.176.90.0/24 | 256 | NEKTAR-T316-90 | Nektar Therapeutics (NT-323) · US | Reassigned | Sep 30, 2017 | jcummings@ |
Network & registry
IPv4 market
Holder
- Organization
- AT&T Enterprises, LLC
- Handle
- AEL-360
- Range
- 12.
0. 0. 0/ 8 - Registration type
- Direct Allocation
- Record created
- Aug 23, 1983
- Legacy
- yes
- Reallocated to
- AT&T Services, Inc. (ATTW)
- Reallocated range
- 12.
176. 80. 0/ 20 - Reallocated
- Dec 15, 2003
Origin network
AS18544
US
- Name
- Nektar Therapeutics
- Type
- Business
- Registered
- Jul 15, 2010
- Industry
- Manufacturing
- Spamhaus ASN-DROP
- not listed
Routing timeline
Covering aggregate above, the prefix's own history below
Summary
Routing history
- Pattern
- Stable
- First seen
- Mar 2014
- Current origin since
- Mar 2014 · 13 yr
- Origin networks
- 1
Whois
Registration for this announcement
- Range
- 12.
176. 90. 0/ 24 - Netname
- NEKTAR-T316-90
- Registrant
- Nektar Therapeutics
- Organization
- Nektar Therapeutics (NT-323)
- Org address
- 455 MISSION BAY BLVD S, SAN FRANCISCO, CA, 94158
- Org country
- US
- Type
- Reassigned
- Handle
- NET-12-176-90-0-1
- Parent
- NET-12-176-80-0-1
- Created
- Sep 30, 2017
- RIR
- ARIN
- Country
- US
- Delegated
- Aug 23, 1983
- Status
- assigned
Report abuse
Abuse contact
- jcummings@
nektar. com - Name
- Cummings, John
- Phone
- +1-415-482-5595
- Handle
- CUMMI205-ARIN