Autonomous system
AS11358 TENNANT-SOFTWARE
Hosting ARIN
Summary
Tennant Software
hosting legacy
TENNANT-SOFTWARE is a small independent network run by Tennant Software, an entity registered to a Pickering, Ontario address. Despite the low AS number this is a recycled ASN: ARIN records the current registration as February 2024, so nothing about it dates to the early internet.
What it's used for
The inventory is tiny and entirely self-contained. RIS sees 2 v4 prefixes / 512 addresses, 2 IPv6 /48s, and 4 observed neighbours — a handful of adjacencies, which rules out any transit role. Both /24s (23.186.184.0/24 and 168.151.255.0/24) are registered to Tennant Software itself and both wear first-party reverse DNS of the form 23-186-184-5.static.as11358.net. Self-registered space plus first-party rDNS is the clean signature of an operator actually running its own network rather than leasing space out, and the static. naming points at fixed server-style assignments rather than an access pool.
Notable
In PeeringDB the network self-describes as Content with an open policy and lists presence at NL-ix, ONIX and Speed-IX. Treat that as self-reported: every PeeringDB field is, and here the declared shape is bigger than the announced inventory — 512 addresses is not a content platform of any scale. The company's own site is little more than a peering contact page.
Interesting
The likeliest reading is a small self-run hosting and peering network, but the evidence supports the shape rather than the fact, so this one is classified with low confidence. Peering at an Ontario exchange corroborates the registered address.
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
Internet exchanges
Recorded at 3 exchanges in 2 countries, largest first.
| Exchange | Location | Their address |
|---|---|---|
| Neutral Internet Exchange | Amsterdam, Netherlands | 193.239.118.45 |
| Speed Internet Exchange | Dronten, Netherlands | 185.1.223.4 |
| Ontario Internet Exchange | Toronto, Canada | 149.112.50.97 |
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-10, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 2 prefixes · 512 addresses IPv6 1 prefixes
| Country | Name | Prefixes |
|---|---|---|
| CA | Canada | 3 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS11358- Registry name
- TSC
- Registrant
- Tennant Software
- Abuse contact
- admin@tennantsoftware.com
- Registered
- 2024-02-09
- Last changed
- 2026-04-18
- Allocation
- assigned
Routing security
RPKI and IRR
- RPKI
- 100% valid · 4 valid, 0 with no ROA
- ROAs
- 6 authorising AS11358
- ASPA
- 2 declared providers
- IRR
- 100% registered · 4 of 4 announcements
- Route objects
- 7 naming AS11358
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: 431 networks and 1,775 prefixes, as published 2026-10-11. 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