38.181.56.0/21
Currently announced by AS174 Cogent Communications, Inc., in the routed prefix 38.0.0.0/8.
- Current ASN
- AS174
- Cogent Communications, Inc.
- Routed prefix
- 38.0.0.0/8
- Most specific route covering this prefix
- ASNs over time
- 2
- 2 announcement records
- RIR allocation
- ARIN
- United States · 38.0.0.0/8
Routing data · Oct 23, 2026, 04:19 UTC
ASN historyEvery routed prefix covering 38.181.56.0/21
| Prefix | ASN | Name | Registered country | First seen (UTC) | Last seen (UTC) | Status |
|---|---|---|---|---|---|---|
| 38.181.56.0/21 | AS140227 | Hong Kong Communications International Co. |  Hong Kong SAR China | 2026-10-22 10:21 | 2026-10-22 16:22 | Stopped |
| 38.0.0.0/8 | AS174 | Cogent Communications, Inc. |  United States | Before monitoring | 2026-10-23 04:19 | Announcing |
More specific routes8 total
| Prefix | ASN | Name | Registered country | First seen (UTC) | Last seen (UTC) | Status |
|---|---|---|---|---|---|---|
| 38.181.56.0/24 | AS140227 | Hong Kong Communications International Co. | Hong Kong SAR China | Before monitoring | 2026-10-23 04:19 | Announcing |
| 38.181.57.0/24 | AS140227 | Hong Kong Communications International Co. | Hong Kong SAR China | Before monitoring | 2026-10-23 04:19 | Announcing |
| 38.181.58.0/24 | AS140227 | Hong Kong Communications International Co. | Hong Kong SAR China | Before monitoring | 2026-10-23 04:19 | Announcing |
| 38.181.59.0/24 | AS140227 | Hong Kong Communications International Co. | Hong Kong SAR China | Before monitoring | 2026-10-23 04:19 | Announcing |
| 38.181.60.0/24 | AS140227 | Hong Kong Communications International Co. | Hong Kong SAR China | Before monitoring | 2026-10-23 04:19 | Announcing |
| 38.181.61.0/24 | AS140227 | Hong Kong Communications International Co. | Hong Kong SAR China | Before monitoring | 2026-10-23 04:19 | Announcing |
| 38.181.62.0/24 | AS140227 | Hong Kong Communications International Co. | Hong Kong SAR China | Before monitoring | 2026-10-23 04:19 | Announcing |
| 38.181.63.0/24 | AS140227 | Hong Kong Communications International Co. | Hong Kong SAR China | Before monitoring | 2026-10-23 04:19 | Announcing |
Change logAll changes
| Detected (UTC) | Prefix | Change | ASN | Name | Previous ASN | Country |
|---|---|---|---|---|---|---|
| 2026-10-22 18:21 | 38.181.56.0/21 | Withdrawal | AS140227 | Hong Kong Communications International Co. | — | Hong Kong SAR China |
| 2026-10-22 10:21 | 38.181.56.0/21 | New announcementNo longer announced | AS140227 | Hong Kong Communications International Co. | — | Hong Kong SAR China |