Data as of Nov 6, 2026
66.231.7.136/29
No anonymizer space · no proxy exits in 30 daysSDN Communications
Announced by
Type
Business
Risk
0 / 100 · Low
Recent change
New origin Oct 22, 2026
its first announcement on record
Announcements
Less specific
Covering announcements
| Prefix | Origin | Type | Proxy exits | Holder | RPKI |
|---|---|---|---|---|---|
| 66.231.0.0/19 since May 2005 | AS13576 | Residential | 49 3 always on | SDN Communications |
Registrations in this block
The registry's network records over this block, widest first, each under its parent.
| Range | Addresses | Netname | Holder | Type | Created | Abuse contact |
|---|---|---|---|---|---|---|
| 66.231.0.0/19 | 8,192 | SDN-66-231-0-0 | SDN Communications (SDN) · US | Direct Allocation | Feb 11, 2002 | arin. |
| └ 66.231.7.136/29 | 8 | TE-336 | unknown | — | — | — |
Network & registry
Announced by
Covering announcement 66.231.7.0/24
- Prefix
- 66.231.7.0/24
- Announced by
- AS13576 SDN Communications
- Type
- Residential
- RPKI
- RPKI valid
- Netname
- SDN-66-231-0-0
- Registrant
- SDN Communications
- RIR
- ARIN
Origin network
AS13576
US
- Name
- SDN Communications
- Type
- Internet provider
- Registered
- Jul 8, 1999
- Domain
- sdncommunications.com
- Website
- www.sdncommunications.com
- Industry
- Internet Service Provider (ISP)
- Spamhaus ASN-DROP
- not listed
Routing timeline
Covering aggregate above, the prefix's own history below
66.231.7.0/24
Routing history
- Pattern
- Stable
- First seen
- Oct 22, 2026
- Current origin since
- Oct 22, 2026 · under a month
- Origin networks
- 1
Recorded history
History
- Also announced by
- 393417
RPKI
Route origin authorizations
| ROA prefix | ASN | Max len | Anchor | Verdict |
|---|---|---|---|---|
| 66.231.7.0/24 | AS13576 | /24 | ARIN | RPKI valid |
| 66.231.7.0/24 | AS393417 | /24 | ARIN | Another network |
| 66.231.0.0/19 | AS13576 | /19 | ARIN | Too specific |
Whois
Registration for this announcement
- Range
- 66.
231. 0. 0/ 19 - Netname
- SDN-66-231-0-0
- Registrant
- SDN Communications
- Organization
- SDN Communications (SDN)
- Org address
- 2900 WEST 10TH STREET, Sioux Falls, SD, 57104
- Org country
- US
- Type
- Direct Allocation
- Handle
- NET-66-231-0-0-1
- Parent
- NET-66-0-0-0-0
- Created
- Feb 11, 2002
- RIR
- ARIN
- Country
- US
- Delegated
- Feb 11, 2002
- Status
- assigned
Report abuse
Abuse contact
- arin.
abuse@ sdncommunications. com - Name
- SDN Communications Abuse
- Phone
- +1-605-978-3548
- Handle
- SCA5-ARIN