Data as of Nov 8, 2026
208.53.212.0/24
No anonymizer space · no proxy exits in 30 daysSDN Communications
Announcement
this exact prefix
RPKI valid
Announced by
Type
Residential
Risk
30 / 100 · Medium
Recently moved
Recent change
New origin Oct 30, 2026
from AS393417 SDN Communications
Announcements
Less specific
Covering announcements
| Prefix | Origin | Type | Proxy exits | Holder | RPKI |
|---|---|---|---|---|---|
| 208.53.192.0/18 since Sep 2005 | AS13576 | Residential | 122 10 always on | SDN Communications |
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 |
|---|---|---|---|---|---|---|
| 208.53.192.0/18 | 16,384 | SDN-208-53-192-0 | SDN Communications (SDN) · US | Direct Allocation | Jul 12, 2004 | arin. |
| └ 208.53.212.0/24 | 256 | SDN-BKBN | unknown | Reassigned | Mar 24, 2022 | arin. via SDN-208-53-192-0 |
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
Registry
Holder
- Organization
- SDN Communications
- Handle
- SDN
- Range
- 208.
53. 192. 0/ 18 - Registration type
- Direct Allocation
- Record created
- Jul 12, 2004
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
Summary
Routing history
- Pattern
- Rotating
- First seen
- Aug 2019
- Current origin since
- Oct 30, 2026 · under a month
- Origin networks
- 2
- Last change of origin
- Oct 30, 2026
Recorded history
History
- Handoffs
- 1
- Also announced by
- 393417
RPKI
Route origin authorizations
| ROA prefix | ASN | Max len | Anchor | Verdict |
|---|---|---|---|---|
| 208.53.212.0/24 | AS13576 | /24 | ARIN | RPKI valid |
| 208.53.212.0/24 | AS393417 | /24 | ARIN | Another network |
| 208.53.192.0/18 | AS13576 | /18 | ARIN | Too specific |
Whois
Registration for this announcement
- Range
- 208.
53. 212. 0/ 24 - Netname
- SDN-BKBN
- Organization
- Not stated by the registry
- Type
- Reassigned
- Handle
- NET-208-53-212-0-1
- Parent
- NET-208-53-192-0-1
- Created
- Mar 24, 2022
- 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