subnet.im

AS3491PCCW Global (HK) Ltd.

Hong Kong SAR ChinaRegistryAPNICTypeT1

As of 10th November 2026, AS3491 (PCCW Global (HK) Ltd.), a tier-1 transit network registered in Hong Kong SAR China with APNIC, originates 527 IPv4 prefixes covering 1.7M addresses and 44 IPv6 prefixes. By IPv4 address space that makes it the 314th-largest of the 80,723 networks we see originating IPv4, and the 5th-largest of 759 in Hong Kong SAR China. It is seen behind 65 upstream networks, most often AS24516 (Virtutel Pty Ltd) and AS58511 (Swoop (Anycast Global Backbone)), and in front of 690 downstream networks. 92% of its announcements have a valid RPKI ROA; 10 are RPKI-invalid. 48% of its routes reach at least 90% of full-feed peers, and 262 prefixes are also originated by another network.

At a glance

IPv4 prefixes

527

IPv6 prefixes

44

IPv4 addresses

1.7M

IPv6 /64s

17.3B

Upstream graph

The networks AS3491 is seen behind, one and two hops out, drawn from real AS paths.

AS3491Toward the internet core
Upstream graph for AS3491: 11 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS3491PCCW Global (HK) …This networkAS2914NTT America, Inc.AS6667Elisa OyjAS24516Virtutel Pty LtdAS58511Swoop (Anycast Gl…AS199524Gcore S.A.AS49544i3D.net B.VAS215859Hetzner Cloud - S…AS3356Lumen (Level 3)AS174Cogent Communicat…AS1299Arelion (fka. Tel…AS6939Hurricane Electri…

Networks observed one and two hops upstream of AS3491 in real AS paths. A thicker line means more vantage points saw that adjacency, so weight tracks how well attested it is — not how much traffic it carries. Adjacency is an observation; whether it is a transit purchase or a settlement-free peering is an inference, and is labelled as one wherever we show it.

Neighbouring networks

1,478

adjacent networks

Upstreams
654%
Peers
72349%
Downstreams
69047%

Networks carrying this one's traffic toward the rest of the internet. Listing the 40 seen on the most AS paths, of 65.

Upstreams of AS3491
NetworkCountryRelationshipPathsVantage pts
AS24516Virtutel Pty LtdAUPeer703,4602
AS58511Swoop (Anycast Global Backbone)AUPeer258,4861
AS6667Elisa OyjFIPeer214,4864
AS199524Gcore S.A.LUPeer159,4722
AS2914NTT America, Inc.USPeer147,69668
AS13030Init7 (Switzerland) Ltd.CHPeer143,0915
AS3356Lumen (Level 3)USPeer115,94943
AS1299Arelion (fka. Telia Carrier)SEPeer112,49361
AS2497Internet Initiative Japan Inc.JPPeer95,9676
AS37497Network Platforms (PTY) LTDZAPeer92,0752

Prefixes

All 571

The largest blocks AS3491 originates, widest first.

Largest prefixes originated by AS3491
PrefixAddressesVisibility
63.216.0.0/13524k58/76
209.8.0.0/15131k76/76
205.177.0.0/1665.5k76/76
205.252.0.0/1665.5k76/76
206.161.0.0/1665.5k76/76
207.226.0.0/1665.5k76/76
207.176.0.0/1732.8k76/76
212.212.128.0/1732.8k76/76
63.220.64.0/1816.4k59/76
63.223.64.0/1816.4k59/76

Routing health

How AS3491's own announcements validate against RPKI and how far they propagate. The same measures for the whole routing table are on the routing table in numbers.

RPKI origin validation

  • Valid91.9%525
  • Invalid1.8%10
  • No ROA6.3%36

Propagation

  • Globally propagated90% of full-feed peers or more48.2%275
  • Partially propagated40% to 90%45.7%261
  • Seen by few peersUnder 40%6.1%35

Prefix sizes

IPv4 — 527 prefixes

IPv6 — 44 prefixes

  • /324.3B × /646.8%3
  • /35537M × /6418.2%8
  • /37134M × /642.3%1
  • /4865.5k × /6472.7%32

Recent changes

Announcements that started or stopped since 11th Oct 2026.

23 announced and 3 withdrawn in all; the most recent are shown.

Routing data derived from RouteViews MRT archives, BGPKIT relationship inference and public registry data.