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AS4837

AS4837 is China Unicom’s network.

Last updated 3 Nov 2026 from DB-IP ASN Lite (2026-11-01) and RIR statistics (4 Nov 2026)

Short answer

AS4837 belongs to CHINA UNICOM China169 Backbone. DB-IP Lite attributes 56,883,908 IPv4 addresses in 615 ranges and 112 IPv6 ranges to it, all or nearly all of the IPv4 space in China. The number is registered with APNIC in China on 17 Sept 2001.

Facts for AS4837
Operator (DB-IP)CHINA UNICOM China169 Backbone
KindHome broadband (curated)
IPv4 addresses56,883,908
IPv4 ranges615
IPv6 ranges112
RegistryAPNIC
Registered17 Sept 2001
Registry countryChina (CN)

Does it publish a geofeed?

Not for the range we sampled (27.192.0.0 – 27.223.255.255): its registry record, and the record above it, link no RFC 8805 geofeed (checked 2 Nov 2026). Without one, location databases have to estimate where these addresses are used, which is a common reason customers of China Unicom see the wrong city. Customers can ask China Unicom to publish one; the evidence report drafts that request.

Shared addresses (CGNAT)

China Unicom hasn’t been documented as using carrier-grade NAT in a source we could check. To see whether your own connection is behind it, compare your router’s address on the CGNAT check.

IPv6

DB-IP lists 112 IPv6 ranges for AS4837, so customers can get IPv6 addresses, which databases place separately from IPv4.

Where its IPv4 space is used, according to DB-IP

CN100%
JP0.00%

Share of the network’s IPv4 addresses by DB-IP Country Lite. IP Geolocation by DB-IP.

IP ranges

RangeAs CIDRAddresses
1.24.0.0 – 1.24.31.2551.24.0.0/198,192
1.24.40.0 – 1.24.79.2551.24.40.0/21, 1.24.48.0/20 …10,240
1.24.95.0 – 1.24.191.2551.24.95.0/24, 1.24.96.0/19 …24,832
1.24.200.0 – 1.24.215.2551.24.200.0/21, 1.24.208.0/214,096
1.24.220.0 – 1.24.235.2551.24.220.0/22, 1.24.224.0/21 …4,096
1.24.240.0 – 1.24.255.2551.24.240.0/204,096
1.25.8.0 – 1.25.23.2551.25.8.0/21, 1.25.16.0/214,096
1.25.36.0 – 1.25.39.2551.25.36.0/221,024
1.25.48.0 – 1.25.91.2551.25.48.0/20, 1.25.64.0/20 …11,264
1.25.96.0 – 1.25.127.2551.25.96.0/198,192
1.25.136.0 – 1.28.11.2551.25.136.0/21, 1.25.144.0/20 …164,864
1.28.28.0 – 1.28.40.2551.28.28.0/22, 1.28.32.0/21 …3,328
1.28.43.0 – 1.28.95.2551.28.43.0/24, 1.28.44.0/22 …13,568
1.28.100.0 – 1.28.139.2551.28.100.0/22, 1.28.104.0/21 …10,240
1.28.144.0 – 1.28.147.2551.28.144.0/221,024
1.28.152.0 – 1.28.155.2551.28.152.0/221,024
1.28.160.0 – 1.28.167.2551.28.160.0/212,048
1.28.172.0 – 1.28.175.2551.28.172.0/221,024
1.28.180.0 – 1.28.223.2551.28.180.0/22, 1.28.184.0/21 …11,264
1.28.228.0 – 1.30.39.2551.28.228.0/22, 1.28.232.0/21 …82,944
1.30.52.0 – 1.30.91.2551.30.52.0/22, 1.30.56.0/21 …10,240
1.30.104.0 – 1.30.163.2551.30.104.0/21, 1.30.112.0/20 …15,360
1.30.168.0 – 1.30.179.2551.30.168.0/21, 1.30.176.0/223,072
1.30.188.0 – 1.31.35.2551.30.188.0/22, 1.30.192.0/18 …26,624
1.31.40.0 – 1.31.191.2551.31.40.0/21, 1.31.48.0/20 …38,912
1.31.196.0 – 1.31.255.2551.31.196.0/22, 1.31.200.0/21 …15,360
1.56.0.0 – 1.63.255.2551.56.0.0/13524,288
1.188.0.0 – 1.191.255.2551.188.0.0/14262,144
14.204.0.0 – 14.205.255.25514.204.0.0/15131,072
27.0.128.0 – 27.0.128.25527.0.128.0/24256
27.0.130.0 – 27.0.131.25527.0.130.0/23512
27.8.0.0 – 27.15.255.25527.8.0.0/13524,288
27.40.0.0 – 27.40.1.25527.40.0.0/23512
27.40.8.0 – 27.40.10.25527.40.8.0/23, 27.40.10.0/24768
27.40.14.0 – 27.40.14.25527.40.14.0/24256
27.40.22.0 – 27.40.61.25527.40.22.0/23, 27.40.24.0/21 …10,240
27.50.128.0 – 27.50.255.25527.50.128.0/1732,768
27.98.224.0 – 27.98.255.25527.98.224.0/198,192
27.112.0.0 – 27.112.7.25527.112.0.0/212,048
27.115.80.0 – 27.115.80.25527.115.80.0/24256
27.192.0.0 – 27.223.255.25527.192.0.0/112,097,152
36.32.64.0 – 36.32.255.25536.32.64.0/18, 36.32.128.0/1749,152
36.33.48.0 – 36.33.151.25536.33.48.0/20, 36.33.64.0/18 …26,624
36.33.153.0 – 36.33.215.25536.33.153.0/24, 36.33.154.0/23 …16,128
36.33.248.0 – 36.33.255.25536.33.248.0/212,048
36.34.24.0 – 36.34.255.25536.34.24.0/21, 36.34.32.0/19 …59,392
36.35.32.0 – 36.35.247.25536.35.32.0/19, 36.35.64.0/18 …55,296
36.35.249.0 – 36.35.255.25536.35.249.0/24, 36.35.250.0/23 …1,792
36.50.226.0 – 36.50.226.25536.50.226.0/24256
36.51.253.0 – 36.51.253.25536.51.253.0/24256
2001:4510:1480:: – 2001:4510:14ff:ffff:ffff:ffff:ffff:ffff2001:4510:1480::/41IPv6
2001:4511:1480:: – 2001:4511:14ff:ffff:ffff:ffff:ffff:ffff2001:4511:1480::/41IPv6
2404:6500:dcb3:: – 2404:6500:dcb3:ffff:ffff:ffff:ffff:ffff2404:6500:dcb3::/48IPv6
2405:1480:3001:: – 2405:1480:3001:ffff:ffff:ffff:ffff:ffff2405:1480:3001::/48IPv6
2406:1e40:f012:: – 2406:1e40:f013:ffff:ffff:ffff:ffff:ffff2406:1e40:f012::/47IPv6
2407:6c40:1500:: – 2407:6c40:1500:ffff:ffff:ffff:ffff:ffff2407:6c40:1500::/48IPv6
2407:6c40:1600:: – 2407:6c40:16ff:ffff:ffff:ffff:ffff:ffff2407:6c40:1600::/40IPv6
2408:8000:2000:: – 2408:8000:403f:ffff:ffff:ffff:ffff:ffff2408:8000:2000::/35IPv6
2408:8000:5005:: – 2408:8000:5fff:ffff:ffff:ffff:ffff:ffff2408:8000:5005::/48IPv6
2408:8000:a000:: – 2408:8000:a017:ffff:ffff:ffff:ffff:ffff2408:8000:a000::/44IPv6
2408:8000:a019:: – 2408:8000:afff:ffff:ffff:ffff:ffff:ffff2408:8000:a019::/48IPv6
2408:8000:c038:: – 2408:8000:c038:ffff:ffff:ffff:ffff:ffff2408:8000:c038::/48IPv6
2408:8000:c03b:: – 2408:8000:c03c:ffff:ffff:ffff:ffff:ffff2408:8000:c03b::/48IPv6
2408:8000:c040:: – 2408:8000:cfff:ffff:ffff:ffff:ffff:ffff2408:8000:c040::/42IPv6
2408:8001:1000:: – 2408:8001:1fff:ffff:ffff:ffff:ffff:ffff2408:8001:1000::/36IPv6
2408:8001:6000:: – 2408:8001:6fff:ffff:ffff:ffff:ffff:ffff2408:8001:6000::/36IPv6
2408:8001:9000:: – 2408:8001:9fff:ffff:ffff:ffff:ffff:ffff2408:8001:9000::/36IPv6
2408:8001:f000:: – 2408:8001:ffff:ffff:ffff:ffff:ffff:ffff2408:8001:f000::/36IPv6
2408:8210:: – 2408:8210:ffff:ffff:ffff:ffff:ffff:ffff2408:8210::/32IPv6
2408:8214:b31:: – 2408:8214:7f11:ffff:ffff:ffff:ffff:ffff2408:8214:b31::/48IPv6
Showing 50 of 615 IPv4 and 20 of 112 IPv6 ranges All ranges (CSV)

IP Geolocation by DB-IP, ASN Lite, CC BY 4.0.

Using an address from this network? See which sources agree on where it is.

Sources

  1. DB-IP IP to ASN Lite (CC BY 4.0) · checked 3 Nov 2026
  2. NRO RIR delegated-extended statistics · checked 5 Nov 2026