Data as of Nov 4, 2026
220.128.55.0/24
No anonymizer space · no proxy exits in 30 daysTaiwan Semiconductor Manufactoring Company, Ltd. · space held by Data Communication Business Group
Announcements
Less specific
Covering announcements
| Prefix | Origin | Type | Holder | RPKI |
|---|---|---|---|---|
| 220.128.48.0/21 since May 2005 | AS9505 | Unknown | Data Communication Business Group |
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 |
|---|---|---|---|---|---|---|
| 220.128.0.0/12 | 1,048,576 | HINET-NET | Data Communication Business Group | ALLOCATED PORTABLE | — | [email protected] |
| └ 220.128.0.0/18 | 16,384 | HINET-NET | Data Communication Business Group | ASSIGNED PORTABLE | — | [email protected] |
Network & registry
IPv4 market
Holder
- Organization
- Data Communication Business Group
- Range
- 220.128.0.0/12
- 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
- Rotating
- First seen
- Jun 2006
- Current origin since
- Sep 2023 · 3.1 yr
- Origin networks
- 3
- Last change of origin
- Sep 2023
Recorded history
History
- Handoffs
- 2
RPKI
Route origin authorizations
| ROA prefix | ASN | Max len | Anchor | Verdict |
|---|---|---|---|---|
| 220.128.55.0/24 | AS23675 | /24 | APNIC | RPKI valid |
| 220.128.55.0/24 | AS33717 | /24 | APNIC | Another network |
| 220.128.48.0/21 | AS9505 | /24 | APNIC | Another network |
| 220.128.0.0/18 | 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
- 220.128.55.0/24
- Netname
- TSMC-North-America-TW
- Registrant
- TSMC North America
- Registrant country
- TW
- Organization
- TSMC North America
- Org country
- TW
- Type
- ASSIGNED NON-PORTABLE
- Created
- Not stated by the registry
- Maintainer
- MAINT-TW-TWNIC
- RIR
- APNIC
- Country
- TW
- Delegated
- Oct 9, 2002
- Status
- assigned
Report abuse
Abuse contact
- [email protected]
- Name
- IRT-HINET-1-TW
- Handle
- IRT-HINET-1-TW