$ 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. 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
October 21, 2026 (active)

Prefix Summary

IPv4 Prefixes (raw / aggregated)
1 523 / 569
IPv6 Prefixes (raw / aggregated)
652 / 263
IPv4 Addresses
57 729 024
Largest IPv4 Prefix
/11 (2 097 152 addresses)
Largest IPv6 Prefix
/29
Geolocated Countries
🇨🇳 China (57 729 024 IPs)
Prefix Changed
October 21, 2026

Reputation

Reputation
Fair — 2 828 flagged IPs out of 57 729 024 total (0.00%)
Open Proxies
11 known open proxies in this network

Connectivity Summary

Upstream Providers
11 upstreams providing transit
Peers
53 networks exchanging traffic without transit
Downstream Customers
82 downstreams buying transit
Unclassified
13 unclassified BGP neighbors
Degree
159 unique BGP neighbors
Reach
233 networks in customer cone

Upstream Providers (11)

  • AS3356 — LEVEL3 (Tier-1 transit)
  • AS174 — COGENT-174 (Tier-1 transit)
  • AS7018 — ATT-INTERNET4 (Tier-1 transit)
  • AS701 — UUNET (Tier-1 transit)
  • AS3320 — DTAG (Tier-1 transit)
  • AS45474 — NEXUSGUARD-AS-AP
  • AS4766 — KIXS-AS
  • AS10099 — UNICOM-GLOBAL
  • AS5511 — OPENTRANSIT (Tier-1 transit)
  • AS4134 — CHINANET-BACKBONE
  • and 1 more

Prefix Lists

IPv4 Prefixes (1 523 total)

  • 27.192.0.0/11 (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))
  • 112.224.0.0/11 (2 097 152 addresses (/11 prefix))
  • 42.224.0.0/12 (1 048 576 addresses (/12 prefix))
  • 60.208.0.0/12 (1 048 576 addresses (/12 prefix))
  • 101.16.0.0/12 (1 048 576 addresses (/12 prefix))
  • 110.240.0.0/12 (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))
  • 120.0.0.0/12 (1 048 576 addresses (/12 prefix))
  • 121.16.0.0/12 (1 048 576 addresses (/12 prefix))
  • 175.160.0.0/12 (1 048 576 addresses (/12 prefix))
  • 182.112.0.0/12 (1 048 576 addresses (/12 prefix))
  • 1.24.0.0/13 (524 288 addresses (/13 prefix))
  • 1.56.0.0/13 (524 288 addresses (/13 prefix))
  • 27.8.0.0/13 (524 288 addresses (/13 prefix))
  • 42.176.0.0/13 (524 288 addresses (/13 prefix))
  • 58.16.0.0/13 (524 288 addresses (/13 prefix))
  • 101.64.0.0/13 (524 288 addresses (/13 prefix))
  • 111.160.0.0/13 (524 288 addresses (/13 prefix))
  • 112.80.0.0/13 (524 288 addresses (/13 prefix))
  • 113.0.0.0/13 (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))
  • 118.72.0.0/13 (524 288 addresses (/13 prefix))
  • 119.48.0.0/13 (524 288 addresses (/13 prefix))
  • 119.112.0.0/13 (524 288 addresses (/13 prefix))
  • 122.136.0.0/13 (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))
  • 123.152.0.0/13 (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))
  • 183.184.0.0/13 (524 288 addresses (/13 prefix))
  • 221.200.0.0/13 (524 288 addresses (/13 prefix))
  • 221.208.0.0/13 (524 288 addresses (/13 prefix))
  • 222.136.0.0/13 (524 288 addresses (/13 prefix))
  • 1.188.0.0/14 (262 144 addresses (/14 prefix))
  • 36.32.0.0/14 (262 144 addresses (/14 prefix))
  • 36.248.0.0/14 (262 144 addresses (/14 prefix))
  • 42.4.0.0/14 (262 144 addresses (/14 prefix))
  • 42.52.0.0/14 (262 144 addresses (/14 prefix))
  • 42.56.0.0/14 (262 144 addresses (/14 prefix))

IPv6 Prefixes (652 total)

  • 2408:8230::/29
  • 2408:84f8::/29
  • 2408:8630::/29
  • 2408:8748::/29
  • 2408:8210::/30
  • 2408:8244::/30
  • 2408:8248::/30
  • 2408:8250::/30
  • 2408:826c::/30
  • 2408:8274::/30
  • 2408:8310::/30
  • 2408:8330::/30
  • 2408:8344::/30
  • 2408:8348::/30
  • 2408:8350::/30
  • 2408:8360::/30
  • 2408:836c::/30
  • 2408:8374::/30
  • 2408:8410::/30
  • 2408:8434::/30
  • 2408:843c::/30
  • 2408:8444::/30
  • 2408:844c::/30
  • 2408:8460::/30
  • 2408:846c::/30
  • 2408:8474::/30
  • 2408:84e4::/30
  • 2408:84ec::/30
  • 2408:84f4::/30
  • 2408:8610::/30
  • 2408:8644::/30
  • 2408:8650::/30
  • 2408:866c::/30
  • 2408:8674::/30
  • 2408:8710::/30
  • 2408:8720::/30
  • 2408:8730::/30
  • 2408:8744::/30
  • 2408:876c::/30
  • 2408:8914::/30
  • 2408:8978::/30
  • 2408:8214::/31
  • 2408:821a::/31
  • 2408:8220::/31
  • 2408:822a::/31
  • 2408:822e::/31
  • 2408:8238::/31
  • 2408:823c::/31
  • 2408:824e::/31
  • 2408:825c::/31