AS21557 CYB-BLK-1 - Cybernet Communications, Inc.
🇺🇸ARINassigned
Announced Prefixes (BGP)
39total
35 IPv44 IPv6
IPv4 Addresses
Allocated (RIR)12,800
Announced (BGP)21,760
IPv6 Addresses
Allocated (RIR)7.9×10²⁸
Announced (BGP)8×10²⁸
Announced Prefixes
(BGP)39|
Prefix | RPKI | IRR | Last Seen |
|---|---|---|---|
| No ROA | - | 2026-10-11 | |
| Valid | ARIN | 2026-10-11 | |
| Valid | ARIN | 2026-10-11 | |
| No ROA | ARIN | 2026-10-11 | |
| No ROA | ARIN | 2026-10-11 | |
| No ROA | ARIN | 2026-10-11 | |
| No ROA | ARIN | 2026-10-11 | |
| No ROA | ARIN | 2026-10-11 | |
| No ROA | ARIN | 2026-10-11 | |
| No ROA | ARIN | 2026-10-11 |
1-10 of 39
1 / 4
Allocated Prefixes
(RIR)8Prefix | Country | RIR | Status |
|---|---|---|---|
| 23.128.104.0/24 | 🇺🇸 US | ARIN | allocated |
| 23.128.105.0/24 | 🇺🇸 US | ARIN | allocated |
| 64.15.208.0/20 | 🇺🇸 US | ARIN | allocated |
| 75.127.48.0/20 | 🇺🇸 US | ARIN | allocated |
| 104.218.188.0/22 | 🇺🇸 US | ARIN | allocated |
| 147.92.120.0/21 | 🇺🇸 US | ARIN | allocated |
| 162.219.200.0/22 | 🇺🇸 US | ARIN | allocated |
| 2605:5300::/32 | 🇺🇸 US | ARIN | allocated |
ASPA
No ASPA
External Links
Learn more
- What is an ASN?Autonomous systems, ASN ranges and how they are assigned
- RPKI and route origin validationWhat the RPKI badges on the prefix list mean
- ASPA explainedWhy AS21557 should publish an ASPA object
- IPv4 transfers in the ARIN regionMonthly volume and the latest registry transfers
- ASN data in AI agents and SIEMMCP server and API integrations
API
Open https://api.ipctl.io/v1/asn/21557Returns ASN details, announced prefixes, and BGP routing data.
curl -s "https://api.ipctl.io/v1/asn/21557" | jq