Data as of Nov 3, 2026
211.76.253.0/24
No anonymizer space · no proxy exits in 30 daysAS18185 · space held by Taiwan Network Information Center
Registrations in this block
The registry's network records over this block, widest first, each under its parent.
| Range | Addresses | Netname | Holder | Type | Created | Abuse contact |
|---|---|---|---|---|---|---|
| 211.76.0.0/14 | 262,144 | TWNIC-TW | Taiwan Network Information Center | ALLOCATED PORTABLE | — | [email protected] |
| └ 211.76.240.0/20 | 4,096 | TWNCTU-NET | National Yang Ming Chiao Tung University | ALLOCATED PORTABLE | — | [email protected] |
Network & registry
Announced by
Covering announcement 211.76.240.0/20
- Prefix
- 211.76.240.0/20
- Announced by
- AS18185
- Type
- Business
- RPKI
- RPKI valid
- Netname
- TWNCTU-NET
- Registrant
- National Yang Ming Chiao Tung University
- RIR
- APNIC
Registry
Holder
- Organization
- Taiwan Network Information Center
- Range
- 211.76.0.0/14
- Registration type
- ALLOCATED PORTABLE
Origin network
AS18185
TW
- Type
- Education
- Registered
- Apr 5, 2002
- Domain
- ntcu.edu.tw
- Industry
- Colleges, Universities, and Professional Schools
- Spamhaus ASN-DROP
- not listed
Routing timeline
Who has announced 211.76.240.0/20
211.76.240.0/20
Routing history
- Pattern
- Stable
- First seen
- May 2005
- Current origin since
- May 2005 · 21 yr
- Origin networks
- 1
RPKI
Route origin authorizations
| ROA prefix | ASN | Max len | Anchor | Verdict |
|---|---|---|---|---|
| 211.76.240.0/20 | AS18185 | /24 | APNIC | RPKI valid |
IRR
Route objects on 211.76.240.0/20
| Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|
| AS9505 not the origin | REACH | REACH (Customer Route) | MAINT-REACH-NOC | Jun 4, 2004 |
| AS18185 | NTTCOM | NTCU - Northern Taiwan Community University (proxy-registered route object) | MAINT-ASNET | May 3, 2005 |
| AS18185 | RADB | Far Eastone Telecommunications Co., Ltd | MAINT-AS4780 | Jul 24, 2025 |
Whois
Registration for this announcement
- Range
- 211.76.240.0/20
- Netname
- TWNCTU-NET
- Registrant
- National Yang Ming Chiao Tung University
- Registrant country
- TW
- Organization
- National Yang Ming Chiao Tung University
- Org country
- TW
- Type
- ALLOCATED PORTABLE
- Created
- Not stated by the registry
- Updated
- Mar 24, 2026
- Maintainer
- MAINT-TW-TWNIC
- RIR
- APNIC
- Country
- TW
- Delegated
- Jun 30, 2000
- Status
- assigned
Report abuse
Abuse contact
- [email protected]
- Name
- TWNIC ROLE-TWNCTU
- Handle
- TR593-AP