Data as of Nov 9, 2026
38.236.128.0/19
No anonymizer space · no proxy exits in 30 daysCogent Communications, LLC
Announcement
this exact prefix
No RPKI
Announced by
Type
Unknown
Recent change
New origin Oct 22, 2026
from AS52772 Sjnet Telecomunicacoes - Eireli
Announcements
Less specific
Covering announcements
| Prefix | Origin | Type | Leased from | Proxy exits | Holder | RPKI |
|---|---|---|---|---|---|---|
| 38.0.0.0/8 | AS174 | Internet provider | IP broker Rackdog (part) | 401,849 78,907 always on | Cogent Communications, LLC |
Nesting
More-specifics by size
Sized by addresses, colored by each announcement's type. Click a tile with children to zoom in, a leaf to open it.
More specific
Announcements inside
| Prefix | Origin | Type | Holder | RPKI |
|---|---|---|---|---|
| 38.236.128.0/24 since Aug 2026 | AS174 | Unknown | Cogent Communications, LLC | |
| 38.236.129.0/24 since Aug 2026 | AS174 | Unknown | Cogent Communications, LLC | |
| 38.236.130.0/24 since Aug 2026 | AS174 | Unknown | Cogent Communications, LLC | |
| 38.236.131.0/24 since Aug 2026 | AS174 | Unknown | Cogent Communications, LLC | |
| 38.236.132.0/24 since Aug 2026 | AS174 | Unknown | Cogent Communications, LLC | |
| 38.236.133.0/24 since Aug 2026 | AS174 | Unknown | Cogent Communications, LLC | |
| 38.236.134.0/24 since Aug 2026 | AS174 | Unknown | Cogent Communications, LLC | |
| 38.236.135.0/24 since Aug 2026 | AS174 | Unknown | Cogent Communications, LLC | |
| 38.236.136.0/24 since Aug 2026 | AS174 | Unknown | Cogent Communications, LLC | |
| 38.236.137.0/24 since Aug 2026 | AS174 | Unknown | Cogent Communications, LLC | |
| 38.236.138.0/24 since Aug 2026 | AS174 | Unknown | Cogent Communications, LLC | |
| 38.236.139.0/24 since Aug 2026 | AS174 | Unknown | Cogent Communications, LLC | |
| 38.236.140.0/24 since Aug 2026 | AS174 | Unknown | Cogent Communications, LLC | |
| 38.236.141.0/24 since Aug 2026 | AS174 | Unknown | Cogent Communications, LLC | |
| 38.236.142.0/24 since Aug 2026 | AS174 | Unknown | Cogent Communications, LLC | |
| 38.236.143.0/24 since Aug 2026 | AS174 | Unknown | Cogent Communications, LLC | |
| 38.236.144.0/24 since Aug 2026 | AS174 | Unknown | Cogent Communications, LLC | |
| 38.236.145.0/24 since Aug 2026 | AS174 | Unknown | Cogent Communications, LLC | |
| 38.236.146.0/24 since Aug 2026 | AS174 | Unknown | Cogent Communications, LLC | |
| 38.236.147.0/24 since Aug 2026 | AS174 | Unknown | Cogent Communications, LLC | |
| 38.236.148.0/24 since Aug 2026 | AS174 | Unknown | Cogent Communications, LLC | |
| 38.236.149.0/24 since Aug 2026 | AS174 | Unknown | Cogent Communications, LLC | |
| 38.236.150.0/24 since Aug 2026 | AS174 | Unknown | Cogent Communications, LLC | |
| 38.236.151.0/24 since Aug 2026 | AS174 | Unknown | Cogent Communications, LLC | |
| 38.236.152.0/24 since Aug 2026 | AS174 | Unknown | Cogent Communications, LLC | |
| 38.236.153.0/24 since Aug 2026 | AS174 | Unknown | Cogent Communications, LLC | |
| 38.236.154.0/24 since Aug 2026 | AS174 | Unknown | Cogent Communications, LLC | |
| 38.236.155.0/24 since Aug 2026 | AS174 | Unknown | Cogent Communications, LLC | |
| 38.236.156.0/24 since Aug 2026 | AS174 | Unknown | Cogent Communications, LLC | |
| 38.236.157.0/24 since Aug 2026 | AS174 | Unknown | Cogent Communications, LLC | |
| 38.236.158.0/24 since Aug 2026 | AS174 | Unknown | Cogent Communications, LLC | |
| 38.236.159.0/24 since Aug 2026 | AS174 | Unknown | Cogent Communications, LLC |
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 |
|---|---|---|---|---|---|---|
| 38.0.0.0/8 | 16,777,216 | COGENT-A | Cogent Communications, LLC (COGC) · US | Direct Allocation | Apr 16, 1991 | abuse@ |
| └ 38.236.128.0/19 | 8,192 | WESLEYMELO-CGNT-NET-1 | Wesley Melo da Silva Telecomunicacoes (C11616551) · BR | Reassigned | Jun 9, 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
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
AS174
US
- Name
- Cogent Communications, LLC
- Type
- Internet provider
- Registered
- May 16, 1996
- Domain
- cogentco.com
- Website
- www.cogentco.com/
- Industry
- Internet Service Provider (ISP)
- Spamhaus ASN-DROP
- not listed
- VPN servers
- 1,623
Routing timeline
Covering aggregate above, the prefix's own history below
Summary
Routing history
- Pattern
- Rotating
- First seen
- Jun 2026
- Current origin since
- Oct 22, 2026 · under a month
- Origin networks
- 2
- Last change of origin
- Oct 22, 2026
Recorded history
History
- Handoffs
- 1
IRR
Route objects on the exact prefix
| Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|
| AS52772 not the origin | ALTDB | SJNET-TELECOM | MAINT-AS52772 | Jun 4, 2026 |
IRR inside
Route objects inside
| Prefix | Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|---|
| 38.236.128.0/20 | AS52772 | ALTDB | SJNET-TELECOM | MAINT-AS52772 | Jun 4, 2026 |
| 38.236.128.0/21 | AS52772 | ALTDB | SJNET-TELECOM | MAINT-AS52772 | Jun 4, 2026 |
| 38.236.128.0/22 | AS52772 | ALTDB | SJNET-TELECOM | MAINT-AS52772 | Jun 4, 2026 |
| 38.236.128.0/23 | AS52772 | ALTDB | SJNET-TELECOM | MAINT-AS52772 | Jun 4, 2026 |
| 38.236.130.0/23 | AS52772 | ALTDB | SJNET-TELECOM | MAINT-AS52772 | Jun 4, 2026 |
| 38.236.132.0/22 | AS52772 | ALTDB | SJNET-TELECOM | MAINT-AS52772 | Jun 4, 2026 |
| 38.236.132.0/23 | AS52772 | ALTDB | SJNET-TELECOM | MAINT-AS52772 | Jun 4, 2026 |
| 38.236.134.0/23 | AS52772 | ALTDB | SJNET-TELECOM | MAINT-AS52772 | Jun 4, 2026 |
| 38.236.136.0/21 | AS52772 | ALTDB | SJNET-TELECOM | MAINT-AS52772 | Jun 4, 2026 |
| 38.236.136.0/22 | AS52772 | ALTDB | SJNET-TELECOM | MAINT-AS52772 | Jun 4, 2026 |
| 38.236.136.0/23 | AS52772 | ALTDB | SJNET-TELECOM | MAINT-AS52772 | Jun 4, 2026 |
| 38.236.138.0/23 | AS52772 | ALTDB | SJNET-TELECOM | MAINT-AS52772 | Jun 4, 2026 |
| 38.236.140.0/22 | AS52772 | ALTDB | SJNET-TELECOM | MAINT-AS52772 | Jun 4, 2026 |
| 38.236.140.0/23 | AS52772 | ALTDB | SJNET-TELECOM | MAINT-AS52772 | Jun 4, 2026 |
| 38.236.142.0/23 | AS52772 | ALTDB | SJNET-TELECOM | MAINT-AS52772 | Jun 4, 2026 |
| 38.236.144.0/20 | AS52772 | ALTDB | SJNET-TELECOM | MAINT-AS52772 | Jun 4, 2026 |
| 38.236.144.0/21 | AS52772 | ALTDB | SJNET-TELECOM | MAINT-AS52772 | Jun 4, 2026 |
| 38.236.144.0/22 | AS52772 | ALTDB | SJNET-TELECOM | MAINT-AS52772 | Jun 4, 2026 |
| 38.236.144.0/23 | AS52772 | ALTDB | SJNET-TELECOM | MAINT-AS52772 | Jun 4, 2026 |
| 38.236.146.0/23 | AS52772 | ALTDB | SJNET-TELECOM | MAINT-AS52772 | Jun 4, 2026 |
| 38.236.148.0/22 | AS52772 | ALTDB | SJNET-TELECOM | MAINT-AS52772 | Jun 4, 2026 |
| 38.236.148.0/23 | AS52772 | ALTDB | SJNET-TELECOM | MAINT-AS52772 | Jun 4, 2026 |
| 38.236.150.0/23 | AS52772 | ALTDB | SJNET-TELECOM | MAINT-AS52772 | Jun 4, 2026 |
| 38.236.152.0/21 | AS52772 | ALTDB | SJNET-TELECOM | MAINT-AS52772 | Jun 4, 2026 |
| 38.236.152.0/22 | AS52772 | ALTDB | SJNET-TELECOM | MAINT-AS52772 | Jun 4, 2026 |
| 38.236.152.0/23 | AS52772 | ALTDB | SJNET-TELECOM | MAINT-AS52772 | Jun 4, 2026 |
| 38.236.154.0/23 | AS52772 | ALTDB | SJNET-TELECOM | MAINT-AS52772 | Jun 4, 2026 |
| 38.236.156.0/22 | AS52772 | ALTDB | SJNET-TELECOM | MAINT-AS52772 | Jun 4, 2026 |
| 38.236.156.0/23 | AS52772 | ALTDB | SJNET-TELECOM | MAINT-AS52772 | Jun 4, 2026 |
| 38.236.158.0/23 | AS52772 | ALTDB | SJNET-TELECOM | MAINT-AS52772 | Jun 4, 2026 |
Whois
Registration for this announcement
- Range
- 38.
236. 128. 0/ 19 - Netname
- WESLEYMELO-CGNT-NET-1
- Registrant
- Wesley Melo da Silva Telecomunicacoes
- Organization
- Wesley Melo da Silva Telecomunicacoes (C11616551)
- Type
- Reassigned
- Handle
- NET-38-236-128-0-1
- Parent
- NET-38-0-0-0-1
- Created
- Jun 9, 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