Data as of Nov 4, 2026
123.151.0.0/20
No anonymizer space · no proxy exits in 30 daysASN for TIANJIN Provincial Net of CT · space held by Chinanet Tianjin Province Network
Announcements
Less specific
Covering announcements
| Prefix | Origin | Type | Proxy exits | Holder | RPKI |
|---|---|---|---|---|---|
| 123.151.0.0/16 since Apr 2008 | AS17638 | Residential | 22 | Chinanet Tianjin Province Network | |
| 123.150.0.0/15 since Mar 2007 | AS17638 | Residential | 174 1 always on | Chinanet Tianjin Province Network |
More specific
Announcements inside
| Prefix | Origin | Type | Holder | RPKI |
|---|---|---|---|---|
| 123.151.0.0/21 since Oct 2014 | AS17638 | Residential | Chinanet Tianjin Province Network | |
| 123.151.8.0/24 since Jul 2019 | AS58542 | Hosting | Chinanet Tianjin Province Network | |
| 123.151.9.0/24 since Jul 2019 | AS58542 | Hosting | Chinanet Tianjin Province Network | |
| 123.151.10.0/23 since Jul 2019 | AS58542 | Hosting | Chinanet Tianjin Province Network | |
| 123.151.12.0/22 since Jul 2019 | AS58542 | Hosting | Chinanet Tianjin Province Network |
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 |
|---|---|---|---|---|---|---|
| 123.150.0.0/15 | 131,072 | CHINANET-TJ | Chinanet Tianjin Province Network | ALLOCATED PORTABLE | — | [email protected] |
| └ 123.151.0.0/20 | 4,096 | TIANJIN-DINGSHENG-LTD | unknown | ASSIGNED NON-PORTABLE | — | [email protected] via CHINANET-TJ |
A contact marked “via” is the registry's: the record names none of its own, so the registry hands down its parent's.
Composition
The types across the prefix's announced space, by addresses.
Announced space
Address share
Announced space
Types across the prefix
4,096 addresses
| Type | Addresses | Share | Ranges | |
|---|---|---|---|---|
| Hosting | 2,048 | 50% | 4 | |
| Residential | 2,048 | 50% | 1 |
Network & registry
Announced by
Covering announcement 123.151.0.0/17
- Prefix
- 123.151.0.0/17
- Announced by
- AS17638 ASN for TIANJIN Provincial Net of CT
- Type
- Residential
- Proxy exits
- 10
- RPKI
- RPKI valid
- Netname
- CHINANET-TJ
- Registrant
- Chinanet Tianjin Province Network
- RIR
- APNIC
Origin network
AS17638
CN
- Name
- ASN for TIANJIN Provincial Net of CT
- Type
- Internet provider
- Registered
- Nov 18, 2002
- Domain
- cndata.com
- Industry
- Computer and Information Technology
- Spamhaus ASN-DROP
- not listed
Routing timeline
Covering aggregate above, the prefix's own history below
123.151.0.0/17
Routing history
- Pattern
- Stable
- First seen
- Sep 2010
- Current origin since
- Sep 2010 · 16 yr
- Origin networks
- 1
RPKI
Route origin authorizations
| ROA prefix | ASN | Max len | Anchor | Verdict |
|---|---|---|---|---|
| 123.151.0.0/17 | AS17638 | /17 | APNIC | RPKI valid |
IRR
Route objects on 123.151.0.0/17
| Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|
| AS17638 | RADB | ASN for TIANJIN Provincial Net of CT | MAINT-CT-GNOC | Nov 13, 2023 |
Whois
Registration for this announcement
- Range
- 123.150.0.0/15
- Netname
- CHINANET-TJ
- Registrant
- Chinanet Tianjin Province Network
- Registrant country
- CN
- Organization
- Chinanet Tianjin Province Network
- Org country
- CN
- Type
- ALLOCATED PORTABLE
- Created
- Not stated by the registry
- Updated
- Jun 15, 2021
- Maintainer
- APNIC-HM
- RIR
- APNIC
- Country
- CN
- Delegated
- Feb 28, 2007
- Status
- assigned
Report abuse
Abuse contact
- [email protected]
- Name
- ABUSE CHINANETCN
- Handle
- AC1573-AP