174.3.0.0/16

Currently announced by AS6327 Shaw Cablesystems, in the routed prefix 174.3.0.0/16.

Current ASN: AS6327; Shaw Cablesystems
Routed prefix: 174.3.0.0/16; Most specific route covering this prefix
ASNs over time: 1; 2 announcement records
RIR allocation: ARIN; Canada · 174.0.0.0/13

Routing data · Nov 1, 2026, 22:23 UTC

ASN historyEvery routed prefix covering 174.3.0.0/16

Prefix	ASN	Name	Registered country	First seen (UTC)	Last seen (UTC)	Status
174.3.0.0/16	AS6327	Shaw Cablesystems	Canada	Before monitoring	2026-11-01 22:23	Announcing
174.0.0.0/13	AS6327	Shaw Cablesystems	Canada	Before monitoring	2026-11-01 22:23	Announcing

More specific routes48 total

Prefix	ASN	Name	Registered country	First seen (UTC)	Last seen (UTC)	Status
174.3.0.0/22	AS6327	Shaw Cablesystems	Canada	Before monitoring	2026-11-01 22:23	Announcing
174.3.4.0/22	AS6327	Shaw Cablesystems	Canada	Before monitoring	2026-11-01 22:23	Announcing
174.3.8.0/22	AS6327	Shaw Cablesystems	Canada	Before monitoring	2026-11-01 22:23	Announcing
174.3.12.0/22	AS6327	Shaw Cablesystems	Canada	Before monitoring	2026-11-01 22:23	Announcing
174.3.16.0/22	AS6327	Shaw Cablesystems	Canada	Before monitoring	2026-11-01 22:23	Announcing
174.3.20.0/22	AS6327	Shaw Cablesystems	Canada	Before monitoring	2026-11-01 22:23	Announcing
174.3.24.0/22	AS6327	Shaw Cablesystems	Canada	Before monitoring	2026-11-01 22:23	Announcing
174.3.28.0/22	AS6327	Shaw Cablesystems	Canada	Before monitoring	2026-11-01 22:23	Announcing
174.3.32.0/22	AS6327	Shaw Cablesystems	Canada	Before monitoring	2026-11-01 22:23	Announcing
174.3.36.0/22	AS6327	Shaw Cablesystems	Canada	Before monitoring	2026-11-01 22:23	Announcing
174.3.40.0/22	AS6327	Shaw Cablesystems	Canada	Before monitoring	2026-11-01 22:23	Announcing
174.3.44.0/22	AS6327	Shaw Cablesystems	Canada	Before monitoring	2026-11-01 22:23	Announcing
174.3.48.0/22	AS6327	Shaw Cablesystems	Canada	Before monitoring	2026-11-01 22:23	Announcing
174.3.52.0/22	AS6327	Shaw Cablesystems	Canada	Before monitoring	2026-11-01 22:23	Announcing
174.3.56.0/22	AS6327	Shaw Cablesystems	Canada	Before monitoring	2026-11-01 22:23	Announcing
174.3.60.0/22	AS6327	Shaw Cablesystems	Canada	Before monitoring	2026-11-01 22:23	Announcing
174.3.96.0/22	AS6327	Shaw Cablesystems	Canada	Before monitoring	2026-11-01 22:23	Announcing
174.3.100.0/22	AS6327	Shaw Cablesystems	Canada	Before monitoring	2026-11-01 22:23	Announcing
174.3.104.0/22	AS6327	Shaw Cablesystems	Canada	Before monitoring	2026-11-01 22:23	Announcing
174.3.108.0/22	AS6327	Shaw Cablesystems	Canada	Before monitoring	2026-11-01 22:23	Announcing
174.3.112.0/22	AS6327	Shaw Cablesystems	Canada	Before monitoring	2026-11-01 22:23	Announcing
174.3.116.0/22	AS6327	Shaw Cablesystems	Canada	Before monitoring	2026-11-01 22:23	Announcing
174.3.120.0/22	AS6327	Shaw Cablesystems	Canada	Before monitoring	2026-11-01 22:23	Announcing
174.3.124.0/22	AS6327	Shaw Cablesystems	Canada	Before monitoring	2026-11-01 22:23	Announcing
174.3.128.0/22	AS6327	Shaw Cablesystems	Canada	Before monitoring	2026-11-01 22:23	Announcing
174.3.132.0/22	AS6327	Shaw Cablesystems	Canada	Before monitoring	2026-11-01 22:23	Announcing
174.3.136.0/22	AS6327	Shaw Cablesystems	Canada	Before monitoring	2026-11-01 22:23	Announcing
174.3.140.0/22	AS6327	Shaw Cablesystems	Canada	Before monitoring	2026-11-01 22:23	Announcing
174.3.144.0/22	AS6327	Shaw Cablesystems	Canada	Before monitoring	2026-11-01 22:23	Announcing
174.3.148.0/22	AS6327	Shaw Cablesystems	Canada	Before monitoring	2026-11-01 22:23	Announcing
174.3.152.0/22	AS6327	Shaw Cablesystems	Canada	Before monitoring	2026-11-01 22:23	Announcing
174.3.156.0/22	AS6327	Shaw Cablesystems	Canada	Before monitoring	2026-11-01 22:23	Announcing
174.3.192.0/22	AS6327	Shaw Cablesystems	Canada	Before monitoring	2026-11-01 22:23	Announcing
174.3.196.0/22	AS6327	Shaw Cablesystems	Canada	Before monitoring	2026-11-01 22:23	Announcing
174.3.200.0/22	AS6327	Shaw Cablesystems	Canada	Before monitoring	2026-11-01 22:23	Announcing
174.3.204.0/22	AS6327	Shaw Cablesystems	Canada	Before monitoring	2026-11-01 22:23	Announcing
174.3.208.0/22	AS6327	Shaw Cablesystems	Canada	Before monitoring	2026-11-01 22:23	Announcing
174.3.212.0/22	AS6327	Shaw Cablesystems	Canada	Before monitoring	2026-11-01 22:23	Announcing
174.3.216.0/22	AS6327	Shaw Cablesystems	Canada	Before monitoring	2026-11-01 22:23	Announcing
174.3.220.0/22	AS6327	Shaw Cablesystems	Canada	Before monitoring	2026-11-01 22:23	Announcing
174.3.224.0/22	AS6327	Shaw Cablesystems	Canada	Before monitoring	2026-11-01 22:23	Announcing
174.3.228.0/22	AS6327	Shaw Cablesystems	Canada	Before monitoring	2026-11-01 22:23	Announcing
174.3.232.0/22	AS6327	Shaw Cablesystems	Canada	Before monitoring	2026-11-01 22:23	Announcing
174.3.236.0/22	AS6327	Shaw Cablesystems	Canada	Before monitoring	2026-11-01 22:23	Announcing
174.3.240.0/22	AS6327	Shaw Cablesystems	Canada	Before monitoring	2026-11-01 22:23	Announcing
174.3.244.0/22	AS6327	Shaw Cablesystems	Canada	Before monitoring	2026-11-01 22:23	Announcing
174.3.248.0/22	AS6327	Shaw Cablesystems	Canada	Before monitoring	2026-11-01 22:23	Announcing
174.3.252.0/22	AS6327	Shaw Cablesystems	Canada	Before monitoring	2026-11-01 22:23	Announcing

Change logAll changes

The routes covering this address have had no origin changes since ASNBase started monitoring.

Look up another address

RIR allocation record

Registry: ARIN
Allocated block: 174.0.0.0/13
Country: Canada
Allocation date: 2008-11-19
Status: allocated

From the RIRs’ delegated statistics files. Shows where the addresses are registered, not where they are used.

How monitoring works

Every 2 hours ASNBase takes the bgp.tools global routing table (prefix → origin ASN) and compares it with the previous one. The detected time is the time of that comparison; the actual change can be up to about 2 hours earlier.
Only routes seen by more than 100 bgp.tools peers are listed as changes; routes with less visibility are only kept in the history.
A new announcement counts only if it is still in the next routing table, and a withdrawal only if the prefix is missing from two tables in a row, so short flaps are ignored.
ASNBase has been monitoring since 2026-10-19. “Before monitoring” under “First seen” means the route was already announced when monitoring started; the earlier date is unknown.
Prefixes first seen during the first day of monitoring do not count as new announcements: most of them were simply missing from the table at the moment monitoring started.
Countries and regions follow the ASN’s registration, not the actual location of the IP addresses.