Data as of Nov 7, 2026
209.148.57.0/24
1 residential-proxy exit · 30 daysAS11490 · space held by Zayo Bandwidth
Residential-proxy exits
Proxy exits
1
0.39% of its addresses · 30 days
Providers
1
selling exits here
Oct 8, 2026 – Nov 6, 2026
Exits seen per day
1 observation
Proxy providers listing exits
- FloppyData
Announcements
Less specific
Covering announcements
| Prefix | Origin | Type | Proxy exits | Holder | RPKI |
|---|---|---|---|---|---|
| 209.148.48.0/20 since May 2015 | AS27506 | Internet provider | 9 1 always on | Zayo Bandwidth | |
| 209.148.32.0/19 since Apr 2008 | AS27506 | Internet provider | 14 1 always on | Zayo Bandwidth |
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 |
|---|---|---|---|---|---|---|
| 209.148.32.0/19 | 8,192 | ZAYO-CCF-209-148-32-0 | Zayo Bandwidth (ZAYOB) · US | Direct Allocation | Apr 3, 2008 | abuse@ |
| └ 209.148.57.0/24 | 256 | NET-SD-209-148-57-0-24 | Silverstein Properties, WTC (C05689979) · US | Reassigned | Apr 20, 2015 | abuse@ via ZAYO-CCF-209-148-32-0 |
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
- Zayo Bandwidth
- Handle
- ZAYOB
- Range
- 209.
148. 32. 0/ 19 - Registration type
- Direct Allocation
- Record created
- Apr 3, 2008
Origin network
AS11490
ZZ
- Type
- Business
- Registered
- Nov 6, 2026
- Domain
- silversteinproperties.com
- Spamhaus ASN-DROP
- not listed
Routing timeline
Covering aggregate above, the prefix's own history below
Summary
Routing history
- Pattern
- Stable
- First seen
- Mar 2013
- Current origin since
- Mar 2013 · 14 yr
- Origin networks
- 1
IRR
Route objects on the exact prefix
| Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|
| AS46887 not the origin | RADB | Crown Castle Fiber Customer Proxy Route | MAINT-AS27506 | Nov 13, 2023 |
Whois
Registration for this announcement
- Range
- 209.
148. 57. 0/ 24 - Netname
- NET-SD-209-148-57-0-24
- Registrant
- Silverstein Properties, WTC
- Organization
- Silverstein Properties, WTC (C05689979)
- Type
- Reassigned
- Handle
- NET-209-148-57-0-1
- Parent
- NET-209-148-32-0-1
- Created
- Apr 20, 2015
- RIR
- ARIN
- Country
- US
- Delegated
- Apr 3, 2008
- Status
- assigned
Report abuse
Abuse contact
- abuse@
zayo. com - Name
- Abuse
- Phone
- +1-866-236-2824
- Handle
- ABUSE5675-ARIN