Data as of Nov 11, 2026
12.107.187.0/24
No anonymizer space · no proxy exits in 30 daysDayton Superior Corporation · 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@ |
| └ 12.107.187.0/24 | 256 | DAYTON-S54-187 | Dayton Superior (DAYTO-9) · US | Reassigned | Oct 9, 2007 | — |
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
AS18539
US
- Name
- Dayton Superior Corporation
- Type
- Business
- Registered
- Jul 31, 2007
- Domain
- daytonsuperior.com
- Industry
- Chemical and Pharmaceutical Manufacturing
- Spamhaus ASN-DROP
- not listed
Routing timeline
Covering aggregate above, the prefix's own history below
Summary
Routing history
- Pattern
- Stable
- First seen
- Apr 2008
- Current origin since
- Apr 2008 · 19 yr
- Origin networks
- 1
IRR
Route objects on the exact prefix
| Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|
| AS18539 | RADB | RR-RC-Dayton Superior - Columbus | MAINT-RR | Nov 13, 2023 |
Whois
Registration for this announcement
- Range
- 12.
107. 187. 0/ 24 - Netname
- DAYTON-S54-187
- Registrant
- Dayton Superior
- Organization
- Dayton Superior (DAYTO-9)
- Org address
- 721 RICHARD ST, MIAMISBURG, OH, 45342
- Org country
- US
- Type
- Reassigned
- Handle
- NET-12-107-187-0-1
- Parent
- NET-12-0-0-0-1
- Created
- Oct 9, 2007
- 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