Autonomous system
AS11739 CHIRISA-TECHNOLOGY-PARKS-01
Hosting ARIN
Summary
Digital Fortress / Chirisa Technology Parks
hosting legacy
CHIRISA-TECHNOLOGY-PARKS-01 is held by Digital Fortress, Inc., the colocation arm of the Chirisa data-centre group. Chirisa Technology Parks develops and operates wholesale and hyperscale data-centre capacity in the United States; Digital Fortress is the retail colocation brand inside the same ownership. This is a data-centre network.
What it's used for
Colocation and hosted infrastructure at Chirisa/Digital Fortress facilities. RIS sees 3 IPv4 prefixes, 768 addresses, no IPv6, and 7 observed neighbours. The neighbour count is the interesting number: seven adjacencies against only three /24s is high for the address count, and that is what a carrier-neutral facility looks like. Data centres cross-connect to several networks so their tenants can pick a carrier, even when the operator's own announced space is tiny.
Notable
The registrants are the corporate history, not a red flag. 74.209.162.0/24 registers to Chirisa Technology Parks; 209.20.152.0/24 and 209.20.153.0/24 register to Chirisa Piscataway Inc., the entity holding the New Jersey site at Piscataway. Different legal names, one group. That is intra-group registration, which is exactly the false positive the IP-leasing test is designed not to fire on.
The reverse DNS on 74.209.162.x resolves under spo1.net.bytegrid.com. ByteGrid was a previous operator of data-centre space that passed through subsequent owners before landing in this group, and the PTR template simply never got renamed. Stale rDNS surviving an acquisition is common and says nothing about who holds the space today.
Interesting
The address footprint is small because that is not where the business is. Chirisa's product is megawatts and floor space, sold wholesale to tenants who bring their own ASNs and their own addresses. The 768 addresses here are the operator's own management and out-of-band surface, not the network the customers ride.
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
No exchange port on file. Many exchanges publish no participant list, so this is not proof of absence.
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-18, 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 · 768 addresses IPv6 0 prefixes
| Country | Name | Prefixes |
|---|---|---|
| US | United States of America | 2 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS11739- Registry name
- CHIRISA-TECHNOLOGY-PARKS-01
- Registrant
- Digital Fortress, Inc.
- Abuse contact
- support@digitalfortress.io
- Registered
- 1998-12-03
- Last changed
- 2024-08-06
- Allocation
- assigned
Routing security
RPKI and IRR
- RPKI
- 100% valid · 3 valid, 0 with no ROA
- ROAs
- 2 authorising AS11739
- ASPA
- no ASPA record
- IRR
- 100% registered · 3 of 3 announcements
- Route objects
- 3 naming AS11739
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 1,784 prefixes, as published 2026-10-19. 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