Data as of Nov 6, 2026
157.238.80.0/20
No anonymizer space · no proxy exits in 30 daysCityside Fiber · space held by NTT America, Inc.
Announcement
this exact prefix
RPKI valid
Announced by
Type
Residential
Risk
0 / 100 · Low
Recent change
New origin Sep 2026
its first announcement on record
Announcements
Less specific
Covering announcements
| Prefix | Origin | Type | Proxy exits | Holder | RPKI |
|---|---|---|---|---|---|
| 157.238.0.0/16 since Aug 2016 | AS2914 | Internet provider | 185 1 always on | NTT America, Inc. |
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 |
|---|---|---|---|---|---|---|
| 157.238.0.0/16 | 65,536 | NTTA-157-238 | NTT America, Inc. (NTTAM-1) · US | Direct Allocation | Feb 4, 1992 | abuse@ |
| └ 157.238.80.0/20 | 4,096 | CITYWIDE-NETWORKS | Cityside Fiber (CNL-178) · US | Reassigned | Sep 30, 2026 | jake. |
Network & registry
IPv4 market
Holder
- Organization
- NTT America, Inc.
- Handle
- NTTAM-1
- Range
- 157.
238. 0. 0/ 16 - Registration type
- Direct Allocation
- Record created
- Feb 4, 1992
- Legacy
- yes
Origin network
AS18731
US
- Name
- Cityside Fiber
- Type
- Internet provider
- Registered
- Oct 12, 2023
- Domain
- citysidefiber.com
- Industry
- Electric Power Generation, Transmission, Distribution
- Spamhaus ASN-DROP
- not listed
Routing timeline
Covering aggregate above, the prefix's own history below
Summary
Routing history
- Pattern
- Stable
- First seen
- Sep 2026
- Current origin since
- Sep 2026 · 2 mo
- Origin networks
- 1
RPKI
Route origin authorizations
| ROA prefix | ASN | Max len | Anchor | Verdict |
|---|---|---|---|---|
| 157.238.80.0/20 | AS18731 | /24 | ARIN | RPKI valid |
| 157.238.0.0/16 | AS2914 | /16 | ARIN | Another network |
Whois
Registration for this announcement
- Range
- 157.
238. 80. 0/ 20 - Netname
- CITYWIDE-NETWORKS
- Registrant
- Cityside Fiber
- Organization
- Cityside Fiber (CNL-178)
- Org address
- 100 Spectrum Center Dr suite 500, Irvine, CA, 92618
- Org country
- US
- Type
- Reassigned
- Handle
- NET-157-238-80-0-1
- Parent
- NET-157-238-0-0-1
- Created
- Sep 30, 2026
- RIR
- ARIN
- Country
- US
- Delegated
- Feb 4, 1992
- Status
- assigned
Report abuse
Abuse contact
- jake.
simon@ citysidenetworks. com - Name
- Jacob Simon
- Phone
- +1-727-599-9912
- Handle
- SIMON405-ARIN