AS17623 China United Network Communications Group Co., Ltd.

AS17623China United Network Communications Group Co., Ltd.ISP

WHOIS Topology

China UnicomChina · APNICchinaunicom.com

Hosts top sitesBusiness linesHome broadbandMobile networkVPS hosting

IPv4 addresses

493,312

810 announced prefixes

IPv6 addresses

2.06 × 10²⁸

459 announced prefixes

BGP neighbours

…

CAIDA rank

#4,247

Customer cone 5 ASNs

Estimated users

2.7M

APNIC Labs estimate

RPKI

100% valid

0 invalid · 4 not covered

Average purity

845 sampled IPs

IXPs / facilities

0 / 0

Operator self-reported

History

How prefixes were announced and changed hands, registration changes, and outage or hijack incidents.

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IP ranges

Currently announced prefixes with their RIR registration and geolocation.

Prefix	RPKI	Registration	Geolocation	Addresses
27.38.0.0/16	Valid	UNICOM-GDSZAPNIC	Shenzhen	65,536
58.250.0.0/16	Valid	UNICOM-GDAPNIC	China	65,536
58.251.0.0/16	Valid	UNICOM-GDAPNIC	China	65,536
163.125.0.0/16	Valid	UNICOM-GDAPNIC	Shenzhen	65,536
27.46.0.0/17	Valid	UNICOM-GDAPNIC	China	32,768
112.95.0.0/17	Valid	UNICOM-GDAPNIC	China	32,768
112.95.128.0/17	Valid	UNICOM-GDAPNIC	China	32,768
210.21.192.0/18	Valid	SHENZHEN-CNCAPNIC	China	16,384
27.39.32.0/19	Valid	UNICOM-GDAPNIC	China	8,192
202.170.128.0/19	Valid	NovaNetworkAPNIC	China	8,192
210.22.0.0/19	Valid	SHENZHEN2-CNCAPNIC	China	8,192
210.83.224.0/19	Valid	UNICOM-GDAPNIC	China	8,192
157.122.0.0/20	Valid	UNICOM-GDAPNIC	China	4,096
157.122.16.0/20	Valid	UNICOM-GDAPNIC	China	4,096
157.122.32.0/20	Valid	UNICOM-GDAPNIC	China	4,096
202.170.128.0/20	Valid	NovaNetworkAPNIC	China	4,096
202.170.144.0/20	Valid	NovaNetworkAPNIC	China	4,096
210.83.224.0/20	Valid	UNICOM-GDAPNIC	China	4,096
210.83.240.0/20	Valid	UNICOM-GDAPNIC	China	4,096
211.162.64.0/20	Valid	SZGWBNAPNIC	China	4,096

Only the first 500 prefixes are listed; address counts and geography use all prefixes.

/24 block profile

One square per /24: colour shows the risk type, shade how many addresses are flagged, stripes mark datacenter blocks. Click a square to see all 256 addresses.

/24s with data 294 / 1,927 （15%） · flagged 36

No risk flagsDatacenter (no flags)ProxyVPNAbuse / blocklistTorDarker = more flagged addresses; dashed = block screen only

27.38.0.0/1691/256 with data · 9 flagged

163.125.0.0/1690/256 with data · 11 flagged

58.250.0.0/1626/256 with data · 5 flagged

58.251.0.0/1615/256 with data · 0 flagged

27.46.0.0/1711/128 with data · 1 flagged

112.95.128.0/178/128 with data · 1 flagged

112.95.0.0/174/128 with data · 1 flagged

157.122.0.0/204/16 with data · 2 flagged

112.97.48.0/223/4 with data · 0 flagged

112.97.52.0/223/4 with data · 0 flagged

112.97.56.0/223/4 with data · 0 flagged

112.97.60.0/223/4 with data · 0 flagged

Hover a square for its numbers; click to see all 256 addresses.

Each prefix shows its 64 /24s with the most data. Built daily from lookups, neighbour sampling, public lists and block screening.

IP reputation

IPs from this network that CleanIP has analysed: purity, abuse reports and the riskiest /24 blocks.

Purity distribution

85–100 81070–84 3150–69 30–49 1

0.19%

Share of IPv4 reported or blocklisted

887

Listed IPs

845

Analysed IPs

Riskiest /24 blocks

/24 block	Flagged	Analysed
103.61.191.0/24	2	2
163.125.191.0/24	1	3
27.38.244.0/24	1	3
157.122.4.0/24	1	1

Flagged = VPN, proxy, Tor or purity below 50. Samples come from user lookups and neighbour sampling, not every address in this network.

Geography

Where this network’s IPv4 addresses are located.

China100.0%

Scope: Single country
In registered country: 100.0%

Estimated by sampling IPv4 ranges against a geolocation database.

Traffic observation

AS17623 · Last 7 days

Mobile vs. Desktop

Desktop60.2%Mobile39.8%

Bot vs. Human

Human34.0%Bot66.0%

Adoption & Usage

Adoption and usage of key protocols

Internet Protocol (IP) Version

IPv478.7%IPv621.3%

HTTP Version

HTTP/1.x

53.3%HTTP/2

31.2%HTTP/3

15.5%

HTTP vs. HTTPS

86.9% HTTPS (encrypted)

Plain HTTP 13.1%

TLS Version

TLS 1.0/1.1< 0.1%TLS 1.25.7%TLS 1.376.5%QUIC17.8%

Security & Attacks

Insights into network and application layer attack traffic

Layer 7 Attacks

GET

60.0%POST

29.3%HEAD

10.4%OPTIONS

0.2%Other

< 0.1%

BGP Announcements

Hourly BGP route announcements over the last 7 days

5,125,421

7-day total

209,859

Hourly peak

Data: Cloudflare Radar, licensed under CC BY-NC 4.0

Activity

Hourly traffic over the last 7 days, normalized to this network’s peak.

Fairly flat around the clock, typical of server or hosting networks.

	00						06						12						18
Mon
Tue
Wed
Thu
Fri
Sat
Sun

Times in UTCLessMore

Peak hour: 06:00–07:00
Active hours: 24 hrs
Weekend vs weekday: Weekdays ≈ weekends
Busiest day: Thu

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BGP upstreams and neighbours

AS17623Standalone page

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WHOIS record

The registry’s record for this AS number: holder, status, dates and contacts.

Sources

Where the information on this page comes from and when it was updated.

Information	Source	Updated
Registered country	RIR daily delegation statistics	2026-10-23
Registered address & allocation date	RIR registration data (RDAP)	2026-09-26
Organization & company country	AS-to-organization data	2026-10-22
Network type	CleanIP ASN canon	2026-10-23
Announced prefixes & BGP neighbours	Public BGP routing data	2026-10-23
IPv4 geography	Geolocation database	—
RPKI validation	RPKI ROA validation data	2026-10-23
Rank & customer cone	CAIDA AS Rank	2026-10-01
Estimated users (APNIC)	APNIC Labs user estimates	2026-10-20
Network tags	Public routing data community tags	2026-10-23
IP reputation	CleanIP lookups and neighbour sampling	—

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Multi-source cross-checks · In-house reputation data · Real data only