Data as of Nov 11, 2026
12.22.158.0/24
No anonymizer space · no proxy exits in 30 daysMasterCard Technologies LLC · 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 | 8,119 301 always on | AT&T Enterprises, LLC | |
| 12.0.0.0/8 | AS7018 | Residential | 13,428 538 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@ |
| └ 12.22.156.0/22 | 1,024 | ATT-NET-12-22-156-0 | MasterCard Technologies LLC (MASTER-7) · US | Reassigned | Oct 14, 2024 | hostmaster@ |
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
AS26380
US
- Name
- MasterCard Technologies LLC
- Type
- Business
- Registered
- Sep 17, 2010
- Domain
- mastercard.com
- Website
- www.mastercard.com
- Industry
- Banks, Credit Card Companies, Mortgage Providers
- Spamhaus ASN-DROP
- not listed
Routing timeline
Covering aggregate above, the prefix's own history below
Summary
Routing history
- Pattern
- Stable
- First seen
- Jul 2006
- Current origin since
- Aug 2016 · 10 yr
- Origin networks
- 2
- Last change of origin
- Oct 2010
Recorded history
History
- Handoffs
- 1
RPKI
Route origin authorizations
| ROA prefix | ASN | Max len | Anchor | Verdict |
|---|---|---|---|---|
| 12.22.156.0/22 | AS26380 | /24 | ARIN | RPKI valid |
Whois
Registration for this announcement
- Range
- 12.
22. 156. 0/ 22 - Netname
- ATT-NET-12-22-156-0
- Registrant
- MasterCard Technologies LLC
- Organization
- MasterCard Technologies LLC (MASTER-7)
- Org address
- 2200 MasterCard Blvd, O'Fallon, MO, 63368
- Org country
- US
- Type
- Reassigned
- Handle
- NET-12-22-156-0-1
- Parent
- NET-12-0-0-0-1
- Created
- Oct 14, 2024
- RIR
- ARIN
- Country
- US
- Delegated
- Aug 23, 1983
- Status
- assigned
Report abuse
Abuse contact
- hostmaster@
mastercard. org - Name
- Network Command Center
- Phone
- +1-636-722-6220
- Handle
- NCC18-ARIN