Data as of Nov 8, 2026
66.171.112.0/21
No anonymizer space · no proxy exits in 30 daysTaiwan Internet Gateway · space held by Chunghwa Telecom Global, INC
Announcements
More specific
Announcements inside
| Prefix | Origin | Type | Holder | RPKI |
|---|---|---|---|---|
| 66.171.114.0/24 since Dec 2018 | AS33717 | Internet provider | Chunghwa Telecom Global, INC | |
| 66.171.115.0/24 since Jan 2019 | AS33717 | Internet provider | Chunghwa Telecom Global, INC | |
| 66.171.118.0/24 since May 2014 | AS33717 | Internet provider | Chunghwa Telecom Global, INC | |
| 66.171.119.0/24 since May 2014 | AS33717 | Internet provider | Chunghwa 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 | abuse@ |
| └ 66.171.112.0/24 | 256 | TWGATE-ARIN-01 | unknown | — | — | — |
| └ 66.171.113.0/24 | 256 | TWGATE-ARIN-02 | unknown | — | — | — |
| └ 66.171.116.0/24 | 256 | TWGATE-ARIN-03 | unknown | — | — | — |
| └ 66.171.117.0/24 | 256 | TWGATE-ARIN-04 | unknown | — | — | — |
Composition
The types across the prefix's announced space, by addresses.
Announced space
Address share
Announced space
Types across the prefix
2,048 addresses
| Type | Addresses | Share | Ranges | |
|---|---|---|---|---|
| Internet provider | 1,024 | 50% | 4 | |
| Unknown | 1,024 | 50% | 2 |
Network & registry
Origin network
AS9505
TW
- Name
- Taiwan Internet Gateway
- Type
- Internet provider
- Registered
- Mar 24, 1999
- Domain
- cht.com.tw
- Website
- www.cht.com.tw
- Industry
- Internet Service Provider (ISP)
- Spamhaus ASN-DROP
- not listed
Routing timeline
Who has announced this prefix
Summary
Routing history
- Pattern
- Stable
- First seen
- Apr 2012
- Current origin since
- Apr 2012 · 15 yr
- Origin networks
- 1
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
- abuse@
chtglobal. com - Name
- Abuse
- Phone
- +1-408-988-1898
- Handle
- ABUSE841-ARIN