Data as of Nov 9, 2026
209.122.172.0/24
1 residential-proxy exit · 30 daysCity of Gaithersburg · space held by RCN
Residential-proxy exits
Proxy exits
1
0.39% of its addresses · 30 days
Providers
2
selling exits here
Oct 10, 2026 – Nov 8, 2026
Exits seen per day
25 observations
Proxy providers listing exits
- ColaProxy
- Thordata
Announcements
Less specific
Covering announcements
| Prefix | Origin | Type | Proxy exits | Holder | RPKI |
|---|---|---|---|---|---|
| 209.122.0.0/16 since May 2005 | AS6079 | Residential | 505 105 always on | RCN |
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 |
|---|---|---|---|---|---|---|
| 209.122.0.0/16 | 65,536 | RCN-BLK-3 | RCN (RTSL-6) · US | Direct Allocation | Aug 6, 1997 | abuse@ |
| └ 209. | 255 | EROLS-CUST-1296 | unknown | — | — | — |
Network & registry
Origin network
AS54724
US
- Name
- City of Gaithersburg
- Type
- Business
- Registered
- Sep 25, 2020
- Domain
- gaithersburgmd.gov
- Industry
- Government and Regulatory Agencies, Administrations, Departments, and Services
- Spamhaus ASN-DROP
- not listed
Routing timeline
Covering aggregate above, the prefix's own history below
Summary
Routing history
- Pattern
- Stable
- First seen
- Nov 2021
- Current origin since
- Nov 2021 · 5.0 yr
- Origin networks
- 1
RPKI
Route origin authorizations
| ROA prefix | ASN | Max len | Anchor | Verdict |
|---|---|---|---|---|
| 209.122.172.0/24 | AS54724 | /24 | ARIN | RPKI valid |
| 209.122.0.0/16 | AS6079 | /24 | ARIN | Another network |
IRR
Route objects on the exact prefix
| Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|
| AS54724 | RADB | Proxy route object registered by Atlantech Online | MAINT-AS7784 | Nov 13, 2023 |
Whois
Registration for this announcement
- Range
- 209.
122. 0. 0/ 16 - Netname
- RCN-BLK-3
- Registrant
- RCN
- Organization
- RCN (RTSL-6)
- Org address
- 650 College Road East, Princeton, NJ, 08540
- Org country
- US
- Type
- Direct Allocation
- Handle
- NET-209-122-0-0-1
- Parent
- NET-209-0-0-0-0
- Created
- Aug 6, 1997
- RIR
- ARIN
- Country
- US
- Delegated
- Aug 6, 1997
- Status
- assigned
Report abuse
Abuse contact
- abuse@
rcn. com - Name
- RCN Abuse Department
- Phone
- +1-888-972-6622
- Handle
- RAD75-ARIN