Data as of Nov 10, 2026
183.136.131.56/29
No anonymizer space · no proxy exits in 30 daysNINGBO, ZHEJIANG Province, P.R.China. · space held by CHINANET Zhejiang province network
Announcements
Less specific
Covering announcements
| Prefix | Origin | Type | Proxy exits | Holder | RPKI |
|---|---|---|---|---|---|
| 183.128.0.0/11 since Feb 2011 | AS4134 | Residential | 14,450 32 always on | CHINANET Zhejiang 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 |
|---|---|---|---|---|---|---|
| 183.128.0.0/11 | 2,097,152 | CHINANET-ZJ | CHINANET Zhejiang province network | ALLOCATED PORTABLE | — | anti-spam@ |
| └ 183.128.0.0/12 | 1,048,576 | CHINANET-ZJ-ZX | CHINANET-ZJ Zhongxin node network | ALLOCATED NON-PORTABLE | — | antispam_ |
| └ 183.136.128.0/20 | 4,096 | CHINANET-ZJ-NB | CHINANET-ZJ Ningbo node network | ALLOCATED NON-PORTABLE | — | antispam_ |
| └ 183.136.131.56/29 | 8 | BCT-LTD | Beijing Century Technology Co., Ltd. | ASSIGNED NON-PORTABLE | — | antispam_ |
Network & registry
Announced by
Covering announcement 183.136.128.0/20
- Prefix
- 183.136.128.0/20
- Announced by
- AS136188 NINGBO, ZHEJIANG Province, P.R.China.
- Type
- Hosting
- RPKI
- RPKI valid
- Netname
- CHINANET-ZJ-NB
- Registrant
- CHINANET-ZJ Ningbo node network
- RIR
- APNIC
Registry
Holder
- Organization
- CHINANET Zhejiang province network
- Range
- 183.
128. 0. 0/ 11 - Registration type
- ALLOCATED PORTABLE
- Reallocated to
- CHINANET-ZJ Ningbo node network
- Reallocated range
- 183.
136. 128. 0/ 20 - Reallocation type
- ALLOCATED NON-PORTABLE
Origin network
AS136188
CN
- Name
- NINGBO, ZHEJIANG Province, P.R.China.
- Type
- Hosting
- Registered
- Jan 13, 2017
- Domain
- chinatelecom.cn
- Spamhaus ASN-DROP
- not listed
Routing timeline
Covering aggregate above, the prefix's own history below
183.136.128.0/20
Routing history
- Pattern
- Stable
- First seen
- Aug 2015
- Current origin since
- Jan 2018 · 8.8 yr
- Origin networks
- 2
- Last change of origin
- Jan 2018
Recorded history
History
- Handoffs
- 1
RPKI
Route origin authorizations
| ROA prefix | ASN | Max len | Anchor | Verdict |
|---|---|---|---|---|
| 183.136.128.0/20 | AS136188 | /20 | APNIC | RPKI valid |
| 183.128.0.0/11 | AS4134 | /11 | APNIC | Another network |
IRR
Route objects on 183.136.128.0/20
| Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|
| AS136188 | RADB | Chinanet-NingBo-IDC | MAINT-AS58461 | Nov 13, 2023 |
Whois
Registration for this announcement
- Range
- 183.
136. 128. 0/ 20 - Netname
- CHINANET-ZJ-NB
- Registrant
- CHINANET-ZJ Ningbo node network
- Registrant country
- CN
- Organization
- CHINANET-ZJ Ningbo node network
- Org country
- CN
- Type
- ALLOCATED NON-PORTABLE
- Created
- Not stated by the registry
- Updated
- Jun 24, 2021
- Maintainer
- MAINT-CHINANET-ZJ
- RIR
- APNIC
- Country
- CN
- Delegated
- Nov 4, 2009
- Status
- assigned
Report abuse
Abuse contact
- antispam_
zjnoc@ 163. com - Name
- ABUSE CHINANETZJ
- Handle
- AC1602-AP