Data as of Nov 8, 2026
12.20.127.0/24
No anonymizer space · no proxy exits in 30 daysCardinal Health, Inc. · space held by AT&T Enterprises, LLC
Announcements
Less specific
Covering announcements
| Prefix | Origin | Type | Proxy exits | Holder | RPKI |
|---|---|---|---|---|---|
| 12.0.0.0/9 | AS7018 | Residential | 8,094 433 always on | AT&T Enterprises, LLC | |
| 12.0.0.0/8 | AS7018 | Residential | 13,375 726 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@ |
| └ 12.20.127.0/24 | 256 | CARDINAL636-127 | Cardinal Health Tangoe, Inc. (CHT-32) · US | Reassigned | Feb 1, 2018 | gmb-ip-admin@ |
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
Origin network
AS14639
US
- Name
- Cardinal Health, Inc.
- Type
- Business
- Registered
- Jan 19, 2000
- Domain
- cardinal.com
- Industry
- Service
- 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 2013 · 14 yr
- Origin networks
- 2
- Last change of origin
- May 2013
Recorded history
History
- Handoffs
- 1
Whois
Registration for this announcement
- Range
- 12.
20. 127. 0/ 24 - Netname
- CARDINAL636-127
- Registrant
- Cardinal Health Tangoe, Inc.
- Organization
- Cardinal Health Tangoe, Inc. (CHT-32)
- Org address
- 7000 CARDINAL PL, DUBLIN, OH, 43017
- Org country
- US
- Type
- Reassigned
- Handle
- NET-12-20-127-0-1
- Parent
- NET-12-0-0-0-1
- Created
- Feb 1, 2018
- RIR
- ARIN
- Country
- US
- Delegated
- Aug 23, 1983
- Status
- assigned
Report abuse
Abuse contact
- gmb-ip-admin@
cardinalhealth. com - Name
- Cardinal Health IP Admin
- Phone
- +1-614-757-8024
- Handle
- CHIA1-ARIN