$ query “AS4837” --type=asn → 1 result(s)

AS4837 · CHINA169-BACKBONE

CHINA UNICOM China169 Backbone

AS4837 is owned by CHINA UNICOM China169 Backbone and is a major transit provider, based in China. The system announces a whopping 57.7 million IPv4 addresses (1.56% of routable IPv4 space), including a /11, and supports IPv6. Most of its address space is geolocated to China, with additional presence in Australia. This AS has recently updated its prefix announcements.

  • Top 5% — Top 5% of all autonomous systems by reach and degree
  • Space Overlord — Over 10 million IPv4 addresses
  • #2 in China — Top 10 by reach within country

Basic Information

Country
🇨🇳 China
Category
Internet Service Provider
Network Role
Major Transit
Data Origin
Authoritative — Metadata from authoritative RIR registry (ARIN, RIPE, APNIC, etc.)
Last Changed
March 04, 2026
Last Seen
June 22, 2026 (active)

Prefix Summary

IPv4 Prefixes (raw / aggregated)
1 092 / 553
IPv6 Prefixes (raw / aggregated)
470 / 239
IPv4 Addresses
57 702 400
Largest IPv4 Prefix
/11 (2 097 152 addresses)
Largest IPv6 Prefix
/29
Geolocated Countries
🇨🇳 China (99 922 240 IPs), 🇦🇺 Australia (1 036 544 IPs)
Prefix Changed
June 23, 2026

Reputation

Reputation
Fair — 3 467 flagged IPs out of 57 702 400 total (0.01%)
Open Proxies
15 known open proxies in this network

Connectivity Summary

Upstream Providers
12 upstreams providing transit
Peers
49 networks exchanging traffic without transit
Downstream Customers
86 downstreams buying transit
Unclassified
4 unclassified BGP neighbors
Degree
151 unique BGP neighbors
Reach
13 172 networks in customer cone

Upstream Providers (12)

  • AS174 — COGENT (Tier-1 transit)
  • AS3356 — LEVEL3 (Tier-1 transit)
  • AS7018 — ATT-INTERNET4 (Tier-1 transit)
  • AS10099 — UNICOM-GLOBAL
  • AS701 — UUNET (Tier-1 transit)
  • AS3320 — DTAG (Tier-1 transit)
  • AS4766 — PACIFIC-FORTUNE-BLAH
  • AS5511 — OPENTRANSIT (Tier-1 transit)
  • AS4134 — CHINANET-BACKBONE
  • AS17676 — GIGAINFRA
  • and 2 more

Prefix Lists

IPv4 Prefixes (1 092 total)

  • 60.0.0.0/11 (2 097 152 addresses (/11 prefix))
  • 27.192.0.0/11 (2 097 152 addresses (/11 prefix))
  • 112.224.0.0/11 (2 097 152 addresses (/11 prefix))
  • 39.64.0.0/11 (2 097 152 addresses (/11 prefix))
  • 60.208.0.0/12 (1 048 576 addresses (/12 prefix))
  • 120.0.0.0/12 (1 048 576 addresses (/12 prefix))
  • 113.224.0.0/12 (1 048 576 addresses (/12 prefix))
  • 115.48.0.0/12 (1 048 576 addresses (/12 prefix))
  • 119.176.0.0/12 (1 048 576 addresses (/12 prefix))
  • 101.16.0.0/12 (1 048 576 addresses (/12 prefix))
  • 121.16.0.0/12 (1 048 576 addresses (/12 prefix))
  • 42.224.0.0/12 (1 048 576 addresses (/12 prefix))
  • 182.112.0.0/12 (1 048 576 addresses (/12 prefix))
  • 175.160.0.0/12 (1 048 576 addresses (/12 prefix))
  • 110.240.0.0/12 (1 048 576 addresses (/12 prefix))
  • 42.176.0.0/13 (524 288 addresses (/13 prefix))
  • 119.48.0.0/13 (524 288 addresses (/13 prefix))
  • 221.208.0.0/13 (524 288 addresses (/13 prefix))
  • 175.16.0.0/13 (524 288 addresses (/13 prefix))
  • 183.184.0.0/13 (524 288 addresses (/13 prefix))
  • 116.136.0.0/13 (524 288 addresses (/13 prefix))
  • 117.8.0.0/13 (524 288 addresses (/13 prefix))
  • 123.152.0.0/13 (524 288 addresses (/13 prefix))
  • 171.120.0.0/13 (524 288 addresses (/13 prefix))
  • 221.200.0.0/13 (524 288 addresses (/13 prefix))
  • 124.128.0.0/13 (524 288 addresses (/13 prefix))
  • 124.88.0.0/13 (524 288 addresses (/13 prefix))
  • 139.208.0.0/13 (524 288 addresses (/13 prefix))
  • 118.72.0.0/13 (524 288 addresses (/13 prefix))
  • 125.40.0.0/13 (524 288 addresses (/13 prefix))
  • 111.160.0.0/13 (524 288 addresses (/13 prefix))
  • 119.112.0.0/13 (524 288 addresses (/13 prefix))
  • 1.24.0.0/13 (524 288 addresses (/13 prefix))
  • 101.64.0.0/13 (524 288 addresses (/13 prefix))
  • 112.80.0.0/13 (524 288 addresses (/13 prefix))
  • 124.160.0.0/13 (524 288 addresses (/13 prefix))
  • 27.8.0.0/13 (524 288 addresses (/13 prefix))
  • 222.136.0.0/13 (524 288 addresses (/13 prefix))
  • 113.0.0.0/13 (524 288 addresses (/13 prefix))
  • 1.56.0.0/13 (524 288 addresses (/13 prefix))
  • 122.136.0.0/13 (524 288 addresses (/13 prefix))
  • 58.16.0.0/13 (524 288 addresses (/13 prefix))
  • 123.8.0.0/13 (524 288 addresses (/13 prefix))
  • 123.128.0.0/13 (524 288 addresses (/13 prefix))
  • 116.144.0.0/14 (262 144 addresses (/14 prefix))
  • 171.36.0.0/14 (262 144 addresses (/14 prefix))
  • 101.72.0.0/14 (262 144 addresses (/14 prefix))
  • 1.188.0.0/14 (262 144 addresses (/14 prefix))
  • 218.24.0.0/14 (262 144 addresses (/14 prefix))
  • 218.8.0.0/14 (262 144 addresses (/14 prefix))

IPv6 Prefixes (470 total)

  • 2408:8748::/29
  • 2408:8230::/29
  • 2408:84f8::/29
  • 2408:8630::/29
  • 2408:846c::/30
  • 2408:8444::/30
  • 2408:8730::/30
  • 2408:8720::/30
  • 2408:8710::/30
  • 2408:843c::/30
  • 2408:866c::/30
  • 2408:8650::/30
  • 2408:8644::/30
  • 2408:876c::/30
  • 2408:8610::/30
  • 2408:8914::/30
  • 2408:84f4::/30
  • 2408:84ec::/30
  • 2408:84e4::/30
  • 2408:8474::/30
  • 2408:8210::/30
  • 2408:8460::/30
  • 2408:8744::/30
  • 2408:844c::/30
  • 2408:8674::/30
  • 2408:8434::/30
  • 2408:8410::/30
  • 2408:8374::/30
  • 2408:836c::/30
  • 2408:8360::/30
  • 2408:8350::/30
  • 2408:8348::/30
  • 2408:8344::/30
  • 2408:8330::/30
  • 2408:8310::/30
  • 2408:8274::/30
  • 2408:826c::/30
  • 2408:8250::/30
  • 2408:8248::/30
  • 2408:8244::/30
  • 2408:8978::/30
  • 2408:845c::/31
  • 2408:8764::/31
  • 2408:896e::/31
  • 2408:8964::/31
  • 2408:8962::/31
  • 2408:8912::/31
  • 2408:8878::/31
  • 2408:8214::/31
  • 2408:821a::/31