asn.dev

Autonomous system

AS53999 AS-PRIORITYCOLO2

Hosting ARIN

IPv4 addresses 4.10K 4 prefixes
IPv6 prefixes 1 counted as prefixes, not addresses
Countries 1 mostly CA
Exchanges 0 recorded by PCH
Upstreams 2 3 downstream
Flagged prefixes 0 none

Summary

Priority Colo Inc

Canada · AI-generated

hosting colocation business

AS-PRIORITYCOLO2 is operated by Priority Colo Inc.

What it's used for

  • The address space carries static IP addresses for colocation and dedicated server customers, as evidenced by reverse DNS entries like 254-213-237-173-static.prioritycolo.com and netnames such as PRICOLO-BLK04.
  • The AS announces 4096 IPv4 addresses across 4 prefixes and 1 IPv6 prefix, with 5 observed neighbours, indicating a hosting provider serving business clients rather than a transit or residential access network.
  • Traffic from this AS consists of web servers, API endpoints, and dedicated infrastructure hosted in Priority Colo's data centers in Toronto and Markham, Ontario.

Notable

  • All registrants for the announced prefixes are listed as Priority Colo Inc, matching the AS holder.
  • Priority Colo is a privately held company founded in 2002, providing colocation, dedicated servers, and related services from its own redundant infrastructure.
  • The inventory consists of contiguous blocks within the 173.237.208.0/21 range, subdivided into four announced prefixes.

This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy. Source, and how to suggest an edit.

Interconnection

Peering at a glance

Full topology · Graph

Internet exchanges

No exchange port on file. Many exchanges publish no participant list, so this is not proof of absence.

Transit providers

2 upstream, 3 downstream and 8 adjacent networks observed; most-used upstreams first.

ASNetworkPaths seen
AS6461Zayo Bandwidth113
AS30176Priority Colo Inc41

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-14, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.

Address space

Summary

Shape and geography

IPv4 4 prefixes · 4.10K addresses IPv6 1 prefixes

CountryNamePrefixes
CACanada5

Registry

Allocation record

ARIN · via Atlas (registry + RDAP)
Registry
ARIN
Handle
AS53999
Registry name
AS-PRIORITYCOLO2
Registrant
Priority Colo Inc
Abuse contact
abuse@prioritycolo.com
Registered
2011-08-29
Last changed
2012-02-24
Allocation
assigned

Routing security

RPKI and IRR

Full detail
RPKI
100% valid · 3 valid, 0 with no ROA
ROAs
2 authorising AS53999
ASPA
no ASPA record
IRR
100% registered · 3 of 3 announcements
Route objects
10 naming AS53999

Reputation

Classification and threat

Hosting Datacenter or cloud provider. Addresses are servers, not people.

Spamhaus DROP

Not on ASN-DROP The network as a whole is not listed.

No DROP prefixes None of its announced space is on the DROP prefix list.

Spamhaus DROP ("Don't Route Or Peer") lists space and networks run by, or hijacked for, spam and cybercrime operations: 442 networks and 1,772 prefixes, as published 2026-10-15. A short, high-confidence list, so a match is worth taking seriously, and absence from it says little on its own.

FBI IC3

No IC3 indicators Nothing from the FBI IC3 feed.

IC3 threat data is alpha. Absence of an indicator is not evidence of good behaviour, only of absence from this one feed.

Elsewhere

Cross-check