Data as of Nov 11, 2026
38.3.166.0/24
No anonymizer space · no proxy exits in 30 daysLastnet Telecom · space held by Cogent Communications, LLC
Announcements
Less specific
Covering announcements
| Prefix | Origin | Type | Leased from | Proxy exits | Holder | RPKI |
|---|---|---|---|---|---|---|
| 38.3.164.0/22 since Nov 2024 | AS273595 | Residential | 70 19 always on | Cogent Communications, LLC | ||
| 38.0.0.0/8 | AS174 | Internet provider | IP broker Rackdog (part) | 399,965 71,979 always on | Cogent Communications, LLC |
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 |
|---|---|---|---|---|---|---|
| 38.0.0.0/8 | 16,777,216 | COGENT-A | Cogent Communications, LLC (COGC) · US | Direct Allocation | Apr 16, 1991 | abuse@ |
| └ 38.3.164.0/22 | 1,024 | METRORIBER-CGNT-NET-2 | Metrofiber Telecomunicacoes LTDA (C11599013) · BR | Reassigned | May 20, 2026 | abuse@ via COGENT-A |
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
Announced by
Covering announcement 38.3.166.0/23
- Prefix
- 38.3.166.0/23
- Announced by
- AS273595 Lastnet Telecom
- Type
- Residential
- RPKI
- RPKI valid
- Netname
- METRORIBER-CGNT-NET-2
- Registrant
- Metrofiber Telecomunicacoes LTDA
- RIR
- ARIN
IPv4 market
Holder
- Organization
- Cogent Communications, LLC
- Handle
- COGC
- Range
- 38.
0. 0. 0/ 8 - Registration type
- Direct Allocation
- Record created
- Apr 16, 1991
- Legacy
- yes
Origin network
AS273595
BR
- Name
- Lastnet Telecom
- Type
- Internet provider
- Registered
- Sep 30, 2022
- Domain
- lastnet.com.br
- Website
- www.lastnet.com.br
- Spamhaus ASN-DROP
- not listed
Routing timeline
Covering aggregate above, the prefix's own history below
38.3.166.0/23
Routing history
- Pattern
- Stable
- First seen
- Feb 2025
- Current origin since
- Feb 2025 · 1.7 yr
- Origin networks
- 1
RPKI
Route origin authorizations
| ROA prefix | ASN | Max len | Anchor | Verdict |
|---|---|---|---|---|
| 38.3.164.0/22 | AS273595 | /23 | ARIN | RPKI valid |
IRR
Route objects on 38.3.166.0/23
| Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|
| AS273595 | RADB | MAINT-AS273595 | Jun 2, 2026 |
Whois
Registration for this announcement
- Range
- 38.
3. 164. 0/ 22 - Netname
- METRORIBER-CGNT-NET-2
- Registrant
- Metrofiber Telecomunicacoes LTDA
- Organization
- Metrofiber Telecomunicacoes LTDA (C11599013)
- Type
- Reassigned
- Handle
- NET-38-3-164-0-1
- Parent
- NET-38-0-0-0-1
- Created
- May 20, 2026
- RIR
- ARIN
- Country
- US
- Delegated
- Apr 16, 1991
- Status
- assigned
Report abuse
Abuse contact
- abuse@
cogentco. com - Name
- Cogent Abuse
- Phone
- +1-877-875-4311
- Handle
- COGEN-ARIN