Data as of Nov 4, 2026
66.171.121.0/24
No anonymizer space · no proxy exits in 30 daysChunghwa Telecom Global, INC
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 |
|---|---|---|---|---|---|---|
| 66.171.112.0/20 | 4,096 | CHT-GLOBAL | Chunghwa Telecom Global, INC (CTG-41) · US | Direct Allocation | Jan 27, 2011 | [email protected] |
| └ 66.171.121.0/28 | 16 | FOXCONN | unknown | — | — | — |
| └ 66.171.121.16/29 | 8 | TSMCNALOSGATOST1 | unknown | — | — | — |
| └ 66.171.121.32/27 | 32 | ISSI-MILPITAS-01 | unknown | — | — | — |
| └ 66.171.121.64/27 | 32 | SILICONWARE | unknown | — | — | — |
| └ 66.171.121.128/26 | 64 | VIA-TECHNOLOGIES-FREMONT-CA-US | unknown | — | — | — |
Composition
The types across the prefix's announced space, by addresses.
Announced space
Address share
Announced space
Types across the prefix
256 addresses
| Type | Addresses | Share | Ranges | |
|---|---|---|---|---|
| Business | 152 | 59% | 5 | |
| Internet provider | 104 | 41% | 3 |
Network & registry
Origin network
AS33717
US
- Name
- Chunghwa Telecom Global, INC
- Type
- Internet provider
- Registered
- Mar 3, 2005
- Domain
- cht.com.tw
- Website
- www.cht.com.tw/en/
- Industry
- Computer and Information Technology
- Spamhaus ASN-DROP
- not listed
Routing timeline
Who has announced this prefix
Summary
Routing history
- Pattern
- Stable
- First seen
- Feb 2011
- Current origin since
- May 2011 · 15 yr
- Origin networks
- 2
- Last change of origin
- May 2011
Recorded history
History
- Handoffs
- 1
RPKI
Route origin authorizations
| ROA prefix | ASN | Max len | Anchor | Verdict |
|---|---|---|---|---|
| 66.171.120.0/21 | AS33717 | /24 | ARIN | RPKI valid |
IRR
Route objects on the exact prefix
| Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|
| AS33717 | RADB | TWGate Customer route | MAINT-AS9505 | Nov 13, 2023 |
Whois
Registration for this announcement
- Range
- 66.171.112.0/20
- Netname
- CHT-GLOBAL
- Registrant
- Chunghwa Telecom Global, INC
- Organization
- Chunghwa Telecom Global, INC (CTG-41)
- Org address
- 2107 N. First Street, suite 580, San Jose, CA, 95131
- Org country
- US
- Type
- Direct Allocation
- Handle
- NET-66-171-112-0-1
- Parent
- NET-66-0-0-0-0
- Created
- Jan 27, 2011
- RIR
- ARIN
- Country
- US
- Delegated
- Jan 27, 2011
- Status
- assigned
Report abuse
Abuse contact
- [email protected]
- Name
- Abuse
- Phone
- +1-408-988-1898
- Handle
- ABUSE841-ARIN