Data as of Nov 10, 2026
208.53.243.0/28
No anonymizer space · no proxy exits in 30 daysSDN 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 |
|---|---|---|---|---|---|---|
| 208.53.192.0/18 | 16,384 | SDN-208-53-192-0 | SDN Communications (SDN) · US | Direct Allocation | Jul 12, 2004 | arin. |
| └ 208.53.243.0/28 | 16 | VALLEY | unknown | — | — | — |
Network & registry
Announced by
Covering announcement 208.53.192.0/18
- Prefix
- 208.53.192.0/18
- Announced by
- AS13576 SDN Communications
- Type
- Residential
- Proxy exits
- 128
- Always-on exits
- 11
- RPKI
- RPKI valid
- Netname
- SDN-208-53-192-0
- 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
Who has announced 208.53.192.0/18
208.53.192.0/18
Routing history
- Pattern
- Stable
- First seen
- Sep 2005
- Current origin since
- Sep 2005 · 21 yr
- Origin networks
- 1
RPKI
Route origin authorizations
| ROA prefix | ASN | Max len | Anchor | Verdict |
|---|---|---|---|---|
| 208.53.192.0/18 | AS13576 | /18 | ARIN | RPKI valid |
Whois
Registration for this announcement
- Range
- 208.
53. 192. 0/ 18 - Netname
- SDN-208-53-192-0
- 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-208-53-192-0-1
- Parent
- NET-208-0-0-0-0
- Created
- Jul 12, 2004
- RIR
- ARIN
- Country
- US
- Delegated
- Jul 12, 2004
- Status
- assigned
Report abuse
Abuse contact
- arin.
abuse@ sdncommunications. com - Name
- SDN Communications Abuse
- Phone
- +1-605-978-3548
- Handle
- SCA5-ARIN