174.1.0.0/16

Currently announced by AS6327 Shaw Cablesystems, in the routed prefix 174.1.0.0/16.

Current ASN: AS6327; Shaw Cablesystems
Routed prefix: 174.1.0.0/16; 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 174.1.0.0/16

Prefix	ASN	Name	Registered country	First seen (UTC)	Last seen (UTC)	Status
174.1.0.0/16	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 routes23 total

Prefix	ASN	Name	Registered country	First seen (UTC)	Last seen (UTC)	Status
174.1.32.0/22	AS6327	Shaw Cablesystems	Canada	Before monitoring	2026-11-01 22:23	Announcing
174.1.36.0/22	AS6327	Shaw Cablesystems	Canada	Before monitoring	2026-11-01 22:23	Announcing
174.1.40.0/22	AS6327	Shaw Cablesystems	Canada	Before monitoring	2026-11-01 22:23	Announcing
174.1.44.0/22	AS6327	Shaw Cablesystems	Canada	Before monitoring	2026-11-01 22:23	Announcing
174.1.48.0/22	AS6327	Shaw Cablesystems	Canada	Before monitoring	2026-11-01 22:23	Announcing
174.1.52.0/22	AS6327	Shaw Cablesystems	Canada	Before monitoring	2026-11-01 22:23	Announcing
174.1.56.0/22	AS6327	Shaw Cablesystems	Canada	Before monitoring	2026-11-01 22:23	Announcing
174.1.60.0/22	AS6327	Shaw Cablesystems	Canada	Before monitoring	2026-11-01 22:23	Announcing
174.1.64.0/22	AS6327	Shaw Cablesystems	Canada	Before monitoring	2026-11-01 22:23	Announcing
174.1.68.0/22	AS6327	Shaw Cablesystems	Canada	Before monitoring	2026-11-01 22:23	Announcing
174.1.72.0/22	AS6327	Shaw Cablesystems	Canada	Before monitoring	2026-11-01 22:23	Announcing
174.1.76.0/22	AS6327	Shaw Cablesystems	Canada	Before monitoring	2026-11-01 22:23	Announcing
174.1.80.0/22	AS6327	Shaw Cablesystems	Canada	Before monitoring	2026-11-01 22:23	Announcing
174.1.84.0/22	AS6327	Shaw Cablesystems	Canada	Before monitoring	2026-11-01 22:23	Announcing
174.1.88.0/22	AS6327	Shaw Cablesystems	Canada	Before monitoring	2026-11-01 22:23	Announcing
174.1.96.0/22	AS6327	Shaw Cablesystems	Canada	Before monitoring	2026-11-01 22:23	Announcing
174.1.100.0/22	AS6327	Shaw Cablesystems	Canada	Before monitoring	2026-11-01 22:23	Announcing
174.1.104.0/22	AS6327	Shaw Cablesystems	Canada	Before monitoring	2026-11-01 22:23	Announcing
174.1.108.0/22	AS6327	Shaw Cablesystems	Canada	Before monitoring	2026-11-01 22:23	Announcing
174.1.112.0/22	AS6327	Shaw Cablesystems	Canada	Before monitoring	2026-11-01 22:23	Announcing
174.1.116.0/22	AS6327	Shaw Cablesystems	Canada	Before monitoring	2026-11-01 22:23	Announcing
174.1.120.0/22	AS6327	Shaw Cablesystems	Canada	Before monitoring	2026-11-01 22:23	Announcing
174.1.124.0/22	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.

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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.