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| Announced By | |||
|---|---|---|---|
| Origin | Origin Registrant | Prefix | Prefix Registrant |
| AS3848 | WorldLinx Telecommunications, Inc. | 142.21.0.0/16  | Chedoke-McMaster Hospitals |
| AS64979 | ASN block not managed by the RIPE NCC | 142.21.0.0/16 | Chedoke-McMaster Hospitals |
| Matching Delegations | |||
|---|---|---|---|
| Registry | Status | Prefix | CC |
| arin | allocated | 142.21.0.0/16 | CA  |
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Found 19 records.
Certificate Transparency Statistics
Total Certificates: 0
Total Domains: 0
Query Time: N/A
Certificates with Domains that map to IPs within 142.21.0.0/16
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Search Results (click row for details)
| Valid From | Valid To | Status | Issuer / Serial | CT Logs | SANs | Count |
|---|
| IP | Domain |
|---|
Hostname results link to the full Cert Search surface for deeper exploration.
RADB
route: 142.21.0.0/16 descr: SMART SYSTEMS FOR HEALTH AGENCY notify: routing@mtsallstream.com origin: AS15290 remarks: MTS-Allstream Customer mnt-by: MAINT-AS15290 changed: luc.delparte@mtsallstream.com 20130509 source: RADB last-modified: 2026-03-11T18:00:03Z
RADB
route: 142.21.0.0/16 descr: Proxy for Allstream Customer origin: AS21992 remarks: Automated Proxy Route Entry mnt-by: MAINT-AS15290 changed: ali.zerik@mtsallstream.com 20140828 source: RADB last-modified: 2026-03-11T18:00:03Z
RADB
route: 142.21.0.0/16 descr: SMART SYSTEMS FOR HEALTH AGENCY notify: routing@mtsallstream.com origin: AS15290 remarks: MTS-Allstream Customer mnt-by: MAINT-AS15290 changed: luc.delparte@mtsallstream.com 20130509 source: RADB last-modified: 2026-03-11T18:00:03Z
RADB
route: 142.21.0.0/16 descr: Proxy for Allstream Customer origin: AS21992 remarks: Automated Proxy Route Entry mnt-by: MAINT-AS15290 changed: ali.zerik@mtsallstream.com 20140828 source: RADB last-modified: 2026-03-11T18:00:03Z
REALTIME
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REALTIME
142.21.0.0/16 is a bogon ().
| Collector | Peer IP | Peer ASN | Has Prefix | Origin ASN |
|---|---|---|---|---|
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|---|---|---|---|---|
| Type | Name | ASN | IP | City |
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