subnet.im

AS12963Scientific Industrial Firm "Volz" Ltd

UkraineRegistryRIPE NCCTypeEyeball

As of 27th September 2026, AS12963 (Scientific Industrial Firm "Volz" Ltd), an access network registered in Ukraine with RIPE NCC, originates 42 IPv4 prefixes covering 45.3k addresses and 1 IPv6 prefix. By IPv4 address space that makes it the 4,646th-largest of the 79,525 networks we see originating IPv4, and the 31st-largest of 1,521 in Ukraine. It is seen behind 38 upstream networks, most often AS35297 (Dataline LLC) and AS3257 (GTT Communications Inc.), and in front of 73 downstream networks. Every one of its announcements has a valid RPKI ROA, and none are RPKI-invalid. 100% of its routes reach at least 90% of full-feed peers.

At a glance

IPv4 prefixes

42

IPv6 prefixes

1

IPv4 addresses

45.3k

IPv6 /64s

4.3B

Upstream graph

The networks AS12963 is seen behind, one and two hops out, drawn from real AS paths.

AS12963Toward the internet core
Upstream graph for AS12963: 12 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS12963Scientific Indust…This networkAS174Cogent Communicat…AS3257GTT Communication…AS9002RETN LimitedAS12741Netia SAAS35297Dataline LLCAS6667Elisa OyjAS398465Rackdog LLCAS6453TATA Communicatio…AS51907Kanton ZugAS3356Lumen (Level 3)AS6461Zayo BandwidthAS6939Hurricane Electri…

Networks observed one and two hops upstream of AS12963 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

330

adjacent networks

Upstreams
3812%
Peers
21966%
Downstreams
7322%

Networks carrying this one's traffic toward the rest of the internet.

Upstreams of AS12963
NetworkCountryRelationshipPathsVantage pts
AS35297Dataline LLCUAPeer3,248104
AS3257GTT Communications Inc.USPeer2,11855
AS9002RETN LimitedGBPeer1,50732
AS12741Netia SAPLPeer71223
AS174Cogent Communications, LLCUSPeer38251
AS7713PT Telkom Indonesia TbkIDPeer3693
AS50263A-Systems Sp. z o.o.PLPeer30817
AS7768Nuh Ahmet Firat trading as TEKNET YAZILIM VE BILGISAYAR TEKNOLOJILERITRPeer1322
AS8888xTom Pty LtdAUPeer1322
AS24940Hetzner Online GmbHDEPeer1312

Prefixes

All 43

The largest blocks AS12963 originates, widest first.

Largest prefixes originated by AS12963
PrefixAddressesVisibility
176.100.0.0/198.2k81/81
194.183.160.0/198.2k81/81
213.160.128.0/198.2k81/81
176.100.16.0/204.1k81/81
94.232.208.0/212k81/81
94.247.224.0/212k81/81
176.97.0.0/212k81/81
91.197.168.0/221k81/81
185.192.216.0/221k81/81
91.218.72.0/2425681/81

Routing health

How AS12963'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

  • Valid100.0%43
  • Invalid0.0%0
  • No ROA0.0%0

Propagation

  • Globally propagated90% of full-feed peers or more100.0%43
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%0.0%0

Prefix sizes

IPv4 — 42 prefixes

IPv6 — 1 prefixes

  • /324.3B × /64100.0%1

Recent changes

Announcements that started or stopped since 28th Aug 2026.

  • Announced176.100.22.0/2422nd Sept 2026
  • Withdrawn176.100.0.0/2421st Sept 2026
  • Withdrawn176.100.31.0/2421st Sept 2026
  • Withdrawn176.100.4.0/2421st Sept 2026
  • Withdrawn176.100.5.0/2421st Sept 2026
  • Withdrawn176.100.6.0/2421st Sept 2026
  • Withdrawn176.100.9.0/2421st Sept 2026
  • Withdrawn94.232.209.0/2421st Sept 2026

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