AS17623 — CNCGROUP-SZ China Unicom Shenzen network
AS17623 announces 148 IPv4 prefixes covering 456,448 addresses and 304 IPv6 prefixes.
About this network
CNCGROUP-SZ is the AS handle for China Unicom Shenzhen, a regional division of the Chinese state-owned telecommunications provider China Unicom.
What it's used for
- The address space carries residential and mobile traffic, evidenced by netnames such as UNICOM-GD and UNICOM-GDSZ associated with the Guangdong region.
- The AS announces 455,424 IPv4 addresses across 369 prefixes and 337 IPv6 prefixes, while maintaining only 5 observed neighbours, a ratio indicative of a large access or eyeball network rather than a transit provider.
Notable
- Registrants for the majority of prefixes are IRT-CU-CN and CNCGROUP GD, which align with the China Unicom identity, though one prefix (202.170.128.0/19) is registered to NovaNetwork.
- The inventory is heavily subdivided into /19 and /20 blocks, reflecting a granular allocation strategy typical of large-scale consumer ISP deployments.
This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy.
Announced prefixes
- 27.38.0.0/16
- 27.39.32.0/19
- 27.39.136.0/21
- 27.40.16.0/22
- 27.40.20.0/23
- 27.46.0.0/17
- 58.250.0.0/21
- 58.250.16.0/20
- 58.250.32.0/19
- 58.250.64.0/20
- 58.250.80.0/22
- 58.250.84.0/23
- 58.250.86.0/24
- 58.250.88.0/21
- 58.250.96.0/20
- 58.250.112.0/21
- 58.250.120.0/22
- 58.250.128.0/24
- 58.250.130.0/23
- 58.250.132.0/22
- 58.250.144.0/20
- 58.250.160.0/19
- 58.250.192.0/18
- 58.251.0.0/19
- 58.251.32.0/20
- 58.251.48.0/21
- 58.251.65.0/24
- 58.251.66.0/23
- 58.251.68.0/22
- 58.251.72.0/21
- 58.251.128.0/20
- 58.251.144.0/22
- 58.251.148.0/24
- 58.251.150.0/23
- 58.251.152.0/21
- 58.251.160.0/19
- 58.251.192.0/18
- 103.61.191.0/24
- 103.219.100.0/23
- 106.3.224.0/21
- 112.89.68.0/23
- 112.89.70.0/24
- 112.89.140.0/24
- 112.91.3.0/24
- 112.91.4.0/24
- 112.91.136.0/21
- 112.91.224.0/23
- 112.91.228.0/24
- 112.92.8.0/23
- 112.95.32.0/19
- 112.95.64.0/21
- 112.95.72.0/23
- 112.95.74.0/24
- 112.95.77.0/24
- 112.95.78.0/23
- 112.95.80.0/20
- 112.95.96.0/19
- 112.95.128.0/21
- 112.95.136.0/23
- 112.95.141.0/24
- 112.95.142.0/23
- 112.95.144.0/20
- 112.95.160.0/19
- 112.95.192.0/19
- 112.95.224.0/21
- 112.95.232.0/22
- 112.95.238.0/23
- 112.95.244.0/22
- 112.95.248.0/21
- 112.97.32.0/21
- 112.97.40.0/22
- 112.97.48.0/20
- 112.97.68.0/22
- 112.97.72.0/21
- 112.97.80.0/21
- 112.97.115.0/24
- 112.97.116.0/24
- 114.119.32.0/24
- 114.119.117.0/24
- 114.119.119.0/24
- 120.80.51.0/24
- 120.80.58.0/23
- 120.80.60.0/22
- 120.80.144.0/22
- 120.80.156.0/22
- 120.80.160.0/21
- 120.80.196.0/22
- 120.81.136.0/21
- 120.83.8.0/24
- 120.84.44.0/23
- 120.84.76.0/23
- 120.86.31.0/24
- 120.87.0.0/24
- 120.87.6.0/23
- 120.87.8.0/23
- 122.13.32.0/24
- 123.58.32.0/23
- 123.58.34.0/24
- 123.58.36.0/24
- 123.58.38.0/23
and 352 more.
Upstream networks
Downstream networks
- AS17962 ShenZhen Topway Video Communication Co. Ltd
- AS23842 Shenzhen Information and Network Center
- AS9809 SHENZHEN NOVA TECHNOLOGIES DEVELOPMENT.,LTD.
- AS137745 China Internet Network Information Center
Adjacent networks
BGP / ASN / CIDR
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IPv4
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IPv6
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Search Results
IPv4 Prefixes
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IPv6 Prefixes
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Total Prefixes
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Unique /24s
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⚠ SUSPICIOUS PREFIX ANNOUNCEMENTS DETECTED