Data as of Nov 6, 2026
27.40.16.0/21
No anonymizer space · no proxy exits in 30 daysChina Unicom Shenzen network · space held by China Unicom Guangdong province network
Announcements
Less specific
Covering announcements
| Prefix | Origin | Type | Proxy exits | Holder | RPKI |
|---|---|---|---|---|---|
| 27.40.0.0/13 since Mar 2010 | AS17816 | Residential | 6,130 24 always on | China Unicom Guangdong province network |
More specific
Announcements inside
| Prefix | Origin | Type | Holder | RPKI |
|---|---|---|---|---|
| 27.40.22.0/24 since Jul 2026 | AS4837 | Residential | China Unicom Guangdong province network | |
| 27.40.23.0/24 since Jul 2026 | AS4837 | Residential | China Unicom Guangdong province network |
Network & registry
Origin network
AS17623
CN
- Name
- China Unicom Shenzen network
- Type
- Internet provider
- Registered
- Jan 18, 2001
- Domain
- chinaunicom.cn
- Industry
- Internet Service Provider (ISP)
- Spamhaus ASN-DROP
- not listed
Routing timeline
Covering aggregate above, the prefix's own history below
Summary
Routing history
- Pattern
- Stable
- First seen
- Jun 2021
- Current origin since
- Jun 2021 · 5.4 yr
- Origin networks
- 1
RPKI
Route origin authorizations
| ROA prefix | ASN | Max len | Anchor | Verdict |
|---|---|---|---|---|
| 27.40.16.0/21 | AS17623 | /21 | APNIC | RPKI valid |
| 27.40.0.0/13 | AS17816 | /13 | APNIC | Another network |
IRR
Route objects on the exact prefix
| Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|
| AS17623 | APNIC | China Unicom | MAINT-CNCGROUP-RR | Jun 8, 2023 |
Whois
Registration for this announcement
- Range
- 27.
40. 0. 0/ 13 - Netname
- UNICOM-GD
- Registrant
- China Unicom Guangdong province network
- Registrant country
- CN
- Organization
- China Unicom Guangdong province network
- Org country
- CN
- Type
- ALLOCATED PORTABLE
- Created
- Not stated by the registry
- Updated
- Oct 21, 2023
- Maintainer
- APNIC-HM
- RIR
- APNIC
- Country
- CN
- Delegated
- Mar 23, 2010
- Status
- assigned
Report abuse
Abuse contact
- hqs-ipabuse@
chinaunicom. cn - Name
- ABUSE CUCN
- Handle
- AC1718-AP