ACTIRISE SAS is a French ad-tech entity whose entire operational continuity hinges on a single upstream, Sparteo SAS. Public evidence is limited to registry records, routing tables, a product site, and a corporate registration—no financials, named personnel, or independent control surface exist. The profile is useful as a dependency mapping node and as a canary for Sparteo's transit stability. Editors should verify the live RIPE database before publication and treat Sparteo’s legal umbrella as the real operational control for the ASN and product. Future collection should target any official contact or governance disclosure.

ACTIRISE SAS

ACTIRISE SAS is a French ad-technology company and the legal entity behind AS210858 and the Actirise publisher monetization platform. The entire delivery of its real-time auction and analytics services depends on a single upstream transit provider, Sparteo SAS, creating a concentrated point of failure for dependent publishers.

Why It Matters

A prefix withdrawal, registrar update, or upstream disconnection affecting AS210858 would directly cut off the endpoints publishers rely on for real-time bidding and reporting, causing immediate revenue loss and altering dependency maps that link publisher inventory to specific autonomous systems.

What Public Sources Show

ACTIRISE SAS is a French ad-technology company that operates the Actirise publisher monetization platform and controls a small but dedicated autonomous system, AS210858. The entity matters not because of its size but because its entire delivery of real-time auction and analytics services depends on a single upstream provider, Sparteo SAS.

Any disruption to that transit link or to ACTIRISE’s own IP prefixes would immediately sever the ad stack for publishers that embed Actirise scripts on their sites.

Public registry records confirm that ACTIRISE SAS was founded in February 2021 in Tourcoing, France. RIPE, BGP.tools, IPinfo and Cloudflare Radar all document its only AS, AS210858, assigned later that year. The AS originates two IPv4 prefixes—45.142.14.0/24 and 185.141.131.0/24—and one IPv6 prefix, 2a0b:100::/29, all carried exclusively by upstream AS210879 (Sparteo SAS). No downstream customers are visible in public routing tables, indicating the network exists solely to serve the Actirise product.

The Actirise product site, published as a Sparteo group website and edited by Sparteo, pitches real-time ad auctions, AI optimization, Core Web Vitals monitoring, and modules called Flashbid, Discovery and Analytics. Publishers integrate a single JavaScript tag, connecting their inventory to a bidding flow hosted on ACTIRISE’s IP space.

This architecture concentrates risk: a prefix hijack, RPKI misconfiguration, or a change in the Sparteo transit policy could make the entire platform unreachable, instantly halting auction revenue for all connected sites.

The observable control surface is narrow. On the network layer, AS210858, the RIPE organisation record ORG-AS917-RIPE, and the maintainer lir-fr-actirise-1-MNT constitute the key routing objects. On the application layer, the web property corporate.actirise.com—whose legal notice assigns editorial responsibility to Sparteo—hosts the product documentation.

No independent PeeringDB entry, downstream ASNs, or separate management portal have been identified, reinforcing the picture of a tightly coupled, single-purpose infrastructure vehicle.

For infrastructure analysts, ACTIRISE illustrates a common ad-tech pattern: a small AS that is simultaneously a critical dependency for many publishers. Because AS210858 has only one transit path and no apparent redundancies, any policy shift at Sparteo would cascade into a service outage for Actirise customers. The entity therefore serves as a canary for the health of Sparteo’s transit relationships and for the fragility of single-homed programmatic advertising delivery.

Publishers that depend on Actirise should verify their own continuity plans. A momentary misconfiguration at AS210858 or AS210879 could disrupt auctions for all participants simultaneously. Independent monitoring of the AS210858 BGP feed and periodic review of the corporate.actirise.com legal page offer the most direct public-level early warning.

Until a named technical contact or a transparent corporate structure emerges, ACTIRISE remains an opaque legal shell, with operational control likely residing at the Sparteo group level.

Operating Surface

ACTIRISE SAS is the RIPE-registered holder of AS210858 and the operator of the Actirise adtech platform, which provides real-time auction monetization and analytics for web publishers. The product website is published and legally attributed to the Sparteo group, indicating that operational control is shared or centralized at the group level.

Any change in the transit relationship between ACTIRISE’s AS210858 and Sparteo’s AS210879, or in the RIPE registry records, could disrupt ad delivery for all publishers using Actirise scripts. The entity’s narrow infrastructure and lack of publicly named personnel make it a useful dependency node for risk mapping, especially when analyzing single-homed ad-tech supply chains.

Watchpoints

ACTIRISE functions as a vehicle asset rather than an independent operating company; its infrastructure and product identity are embedded within the Sparteo group. Any divergence in Sparteo’s business alignment—such as a sale, shutdown, or network re-architecture—would immediately threaten the ad-tech service. The profile therefore serves as an early indicator of group-level churn, not merely a standalone network monitoring task.

1. A PeeringDB entry for AS210858 appears, suggesting network independence. 2) A second upstream transit or peering path is established. 3) Sparteo removes the Actirise product site from its legal notices or alters the editorial statement. 4) A named executive or technical contact is added to RIPE or the product site. 5) Any prefix withdrawal or ASN de-registration.

We lack the live RIPE database entry, a PeeringDB record, any downstream ASNs, financial disclosures, a named responsible person, and a formal corporate structure document. These gaps prevent a confident attribution of operational control and a full risk assessment. Direct RIPE RDAP queries, French commercial court extracts, and any LinkedIn or press mentions of ACTIRISE staff would materially improve the profile.

Sources

• Registry RDAP / WHOIS record - Public-source identity and registry context for ACTIRISE, confirming the association of AS210858 with the ACTIRISE name.
• bgp.tools - Lists AS210858 with as-name ACTIRISE, organisation ORG-AS917-RIPE, status ASSIGNED, prefixes 185.141.131.0/24, 45.142.14.0/24, 2a0b:100::/29, and upstream AS210879 Sparteo SAS.
• ipinfo.io - Identifies AS210858 as ACTIRISE SAS in France, with 512 IPv4 addresses, the prefixes 45.142.14.0/24 and 185.141.131.0/24, and upstream AS210879 Sparteo SAS.
• radar.cloudflare.com - Confirms AS210858 as ACTIRISE in France and provides routing, prefix, connectivity, traffic, and quality views for the ASN.
• Internet registry record - Shows ACTIRISE as an active French company in Tourcoing with internet portals activity, creation date 2021-02-02, legal form SASU, and RCS‑linked corporate events.
• corporate.actirise.com - Describes the Actirise publisher monetization product—real-time auctions, AI optimization, Core Web Vitals monitoring, Flashbid, Discovery, Analytics, WordPress integration, CMP, and one‑tag implementation.
• corporate.sparteo.com - Sparteo legal notices state that corporate.actirise.com is a Sparteo group website edited by Sparteo, linking the product site to the group’s editorial responsibility.