Data as of Nov 3, 2026
203.66.245.0/24
No anonymizer space · no proxy exits in 30 daysTaiwan Semiconductor Manufactoring Company, Ltd. · space held by Taiwan Network Information Center
Announcements
Less specific
Covering announcements
| Prefix | Origin | Type | Proxy exits | Holder | RPKI |
|---|---|---|---|---|---|
| 203.66.0.0/16 since May 2005 | AS3462 | Residential | 16 1 always on | Taiwan Network Information Center |
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 |
|---|---|---|---|---|---|---|
| 203.64.0.0/14 | 262,144 | TWNIC-TW | Taiwan Network Information Center | ALLOCATED PORTABLE | — | [email protected] |
| └ 203.66.0.0/16 | 65,536 | HINET-NET | Data Communication Business Group | ASSIGNED PORTABLE | — | [email protected] |
Network & registry
IPv4 market
Holder
- Organization
- Taiwan Network Information Center
- Range
- 203.64.0.0/14
- Registration type
- ALLOCATED PORTABLE
Origin network
AS23675
TW
- Name
- Taiwan Semiconductor Manufactoring Company, Ltd.
- Type
- Business
- Registered
- Mar 18, 2003
- Domain
- tsmc.com
- Industry
- Software Development
- Spamhaus ASN-DROP
- not listed
Routing timeline
Covering aggregate above, the prefix's own history below
Summary
Routing history
- Pattern
- Reactivated
- First seen
- May 2009
- Current origin since
- Sep 2023 · 3.1 yr
- Origin networks
- 2
- Last change of origin
- Sep 2023
Recorded history
History
- Handoffs
- 1
RPKI
Route origin authorizations
| ROA prefix | ASN | Max len | Anchor | Verdict |
|---|---|---|---|---|
| 203.66.245.0/24 | AS23675 | /24 | APNIC | RPKI valid |
| 203.66.0.0/16 | AS3462 | /24 | APNIC | Another network |
IRR
Route objects on the exact prefix
| Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|
| AS23675 | RADB | Taiwan Semiconductor Manufactoring Company, Ltd. | MAINT-AS3462 | Nov 13, 2023 |
Whois
Registration for this announcement
- Range
- 203.66.245.0/24
- Netname
- TAIWAN-SEMICONDU-HC-TW
- Registrant
- Taiwan Semiconductor Manufacturing Company Limited
- Registrant country
- TW
- Organization
- Taiwan Semiconductor Manufacturing Company Limited
- Org country
- TW
- Created
- Not stated by the registry
- Maintainer
- MAINT-TW-TWNIC
- RIR
- APNIC
- Country
- TW
- Delegated
- Dec 14, 1994
- Status
- assigned
Report abuse
Abuse contact
- [email protected]
- Name
- IRT-HINET-1-TW
- Handle
- IRT-HINET-1-TW