$ 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, established in China. The system announces a whopping 57.7 million IPv4 addresses (1.56% of routable IPv4 space), including a /11, and supports IPv6. Its primary geographic footprint is in China, with additional presence in Australia and Brazil. 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
August 24, 2026 (active)

Prefix Summary

IPv4 Prefixes (raw / aggregated)
1 470 / 572
IPv6 Prefixes (raw / aggregated)
643 / 264
IPv4 Addresses
57 733 888
Largest IPv4 Prefix
/11 (2 097 152 addresses)
Largest IPv6 Prefix
/29
Geolocated Countries
🇨🇳 China (100 788 288 IPs), 🇦🇺 Australia (1 347 408 IPs), 🇧🇷 Brazil (131 072 IPs)
Prefix Changed
August 25, 2026

Reputation

Reputation
Fair — 3 535 flagged IPs out of 57 733 888 total (0.01%)
Open Proxies
14 known open proxies in this network

Connectivity Summary

Upstream Providers
11 upstreams providing transit
Peers
53 networks exchanging traffic without transit
Downstream Customers
83 downstreams buying transit
Unclassified
5 unclassified BGP neighbors
Degree
152 unique BGP neighbors
Reach
9 248 networks in customer cone

Upstream Providers (11)

  • AS174 — COGENT (Tier-1 transit)
  • AS3356 — LEVEL3 (Tier-1 transit)
  • AS7018 — ATT-INTERNET4 (Tier-1 transit)
  • AS701 — UUNET (Tier-1 transit)
  • AS3320 — DTAG (Tier-1 transit)
  • AS4766 — PACIFIC-FORTUNE-BLAH
  • AS10099 — UNICOM-GLOBAL
  • AS5511 — OPENTRANSIT (Tier-1 transit)
  • AS4134 — CHINANET-BACKBONE
  • AS45474 — NEXUSGUARD-AS-AP
  • and 1 more

Prefix Lists

IPv4 Prefixes (1 470 total)

  • 112.224.0.0/11 (2 097 152 addresses (/11 prefix))
  • 39.64.0.0/11 (2 097 152 addresses (/11 prefix))
  • 60.0.0.0/11 (2 097 152 addresses (/11 prefix))
  • 27.192.0.0/11 (2 097 152 addresses (/11 prefix))
  • 113.224.0.0/12 (1 048 576 addresses (/12 prefix))
  • 60.208.0.0/12 (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))
  • 42.224.0.0/12 (1 048 576 addresses (/12 prefix))
  • 119.176.0.0/12 (1 048 576 addresses (/12 prefix))
  • 121.16.0.0/12 (1 048 576 addresses (/12 prefix))
  • 120.0.0.0/12 (1 048 576 addresses (/12 prefix))
  • 115.48.0.0/12 (1 048 576 addresses (/12 prefix))
  • 110.240.0.0/12 (1 048 576 addresses (/12 prefix))
  • 101.16.0.0/12 (1 048 576 addresses (/12 prefix))
  • 118.72.0.0/13 (524 288 addresses (/13 prefix))
  • 123.8.0.0/13 (524 288 addresses (/13 prefix))
  • 117.8.0.0/13 (524 288 addresses (/13 prefix))
  • 119.112.0.0/13 (524 288 addresses (/13 prefix))
  • 119.48.0.0/13 (524 288 addresses (/13 prefix))
  • 1.24.0.0/13 (524 288 addresses (/13 prefix))
  • 111.160.0.0/13 (524 288 addresses (/13 prefix))
  • 222.136.0.0/13 (524 288 addresses (/13 prefix))
  • 101.64.0.0/13 (524 288 addresses (/13 prefix))
  • 58.16.0.0/13 (524 288 addresses (/13 prefix))
  • 183.184.0.0/13 (524 288 addresses (/13 prefix))
  • 1.56.0.0/13 (524 288 addresses (/13 prefix))
  • 113.0.0.0/13 (524 288 addresses (/13 prefix))
  • 122.136.0.0/13 (524 288 addresses (/13 prefix))
  • 221.200.0.0/13 (524 288 addresses (/13 prefix))
  • 116.136.0.0/13 (524 288 addresses (/13 prefix))
  • 123.128.0.0/13 (524 288 addresses (/13 prefix))
  • 123.152.0.0/13 (524 288 addresses (/13 prefix))
  • 42.176.0.0/13 (524 288 addresses (/13 prefix))
  • 221.208.0.0/13 (524 288 addresses (/13 prefix))
  • 124.88.0.0/13 (524 288 addresses (/13 prefix))
  • 124.128.0.0/13 (524 288 addresses (/13 prefix))
  • 124.160.0.0/13 (524 288 addresses (/13 prefix))
  • 125.40.0.0/13 (524 288 addresses (/13 prefix))
  • 139.208.0.0/13 (524 288 addresses (/13 prefix))
  • 171.120.0.0/13 (524 288 addresses (/13 prefix))
  • 175.16.0.0/13 (524 288 addresses (/13 prefix))
  • 112.80.0.0/13 (524 288 addresses (/13 prefix))
  • 27.8.0.0/13 (524 288 addresses (/13 prefix))
  • 122.188.0.0/14 (262 144 addresses (/14 prefix))
  • 42.56.0.0/14 (262 144 addresses (/14 prefix))
  • 110.16.0.0/14 (262 144 addresses (/14 prefix))
  • 182.88.0.0/14 (262 144 addresses (/14 prefix))
  • 116.168.0.0/14 (262 144 addresses (/14 prefix))
  • 116.176.0.0/14 (262 144 addresses (/14 prefix))

IPv6 Prefixes (643 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
  • 2408:871a::/31
  • 2408:834e::/31
  • 2408:896e::/31
  • 2408:8964::/31
  • 2408:8962::/31
  • 2408:8912::/31
  • 2408:8878::/31
  • 2408:886e::/31
  • 2408:8864::/31