Data as of Nov 7, 2026
12.36.207.0/24
No anonymizer space · no proxy exits in 30 daysFirst National Bank of Omaha · 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 | 8,064 434 always on | AT&T Enterprises, LLC | |
| 12.0.0.0/8 | AS7018 | Residential | 13,307 719 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@ |
| └ 12.36.206.0/23 | 512 | FIRST-NA730-206 | First National Bank of Omaha (C09391770) · US | Reassigned | Apr 21, 2023 | abuse@ via ATT |
A contact marked “via” is the registry's: the record names none of its own, so the registry hands down its parent's.
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
AS14888
US
- Name
- First National Bank of Omaha
- Type
- Business
- Registered
- Feb 23, 2000
- Domain
- firstnational.com
- Industry
- Software Development
- Spamhaus ASN-DROP
- not listed
Routing timeline
Covering aggregate above, the prefix's own history below
Summary
Routing history
- Pattern
- Rotating
- First seen
- Oct 2014
- Current origin since
- Dec 2022 · 3.9 yr
- Origin networks
- 2
- Last change of origin
- Dec 2022
Recorded history
History
- Handoffs
- 1
IRR
Route objects on the exact prefix
| Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|
| AS14888 | RADB | V4-PUB-CB-ANNOUNCED | MAINT-AS22773 | Nov 13, 2023 |
Whois
Registration for this announcement
- Range
- 12.
36. 206. 0/ 23 - Netname
- FIRST-NA730-206
- Registrant
- First National Bank of Omaha
- Organization
- First National Bank of Omaha (C09391770)
- Type
- Reassigned
- Handle
- NET-12-36-206-0-1
- Parent
- NET-12-0-0-0-1
- Created
- Apr 21, 2023
- RIR
- ARIN
- Country
- US
- Delegated
- Aug 23, 1983
- Status
- assigned
Report abuse
Abuse contact
- abuse@
att. net - Name
- abuse
- Phone
- +1-919-319-8167
- Handle
- ABUSE7-ARIN