Autonomous system
AS22437 CORESITE-SPARE
Hosting APNIC
Summary
CoreSite
colo datacenter
A CoreSite network block (CORESITE-SPARE). CoreSite operates a US network of carrier-neutral data centers and interconnection campuses, now part of American Tower.
What it's used for
- Colocation, cross-connects, and interconnection for enterprises, carriers, and cloud on-ramps across major US metros.
Notable
- An IP in CoreSite space typically belongs to a colocation customer's equipment, not to CoreSite itself — the operator of whatever runs on it is the tenant.
- CoreSite announces from more than one ASN — see the sibling AS32184.
Interesting
- CoreSite's campuses host dense cloud on-ramps and interconnection fabrics, making them peering hubs in markets like Denver, LA, and Northern Virginia.
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.
Transit providers
1 upstream, 0 downstream and 2 adjacent networks observed; most-used upstreams first.
| AS | Network | Paths seen |
|---|---|---|
| AS2734 | CoreSite | 100 |
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
IPv4 1 prefixes · 256 addresses IPv6 1 prefixes
| Country | Name | Prefixes |
|---|---|---|
| US | United States of America | 2 |
Registry
Allocation record
- Registry
- APNIC
- Handle
AS22437- Registry name
- CORESITE-SPARE
- Registrant
- CoreSite
- Abuse contact
- abuse@coresite.com
- Registered
- 2001-09-27
- Last changed
- 2018-08-29
- Allocation
- assigned
Routing security
RPKI and IRR
- RPKI
- 100% valid · 2 valid, 0 with no ROA
- ROAs
- 2 authorising AS22437
- ASPA
- no ASPA record
- IRR
- 100% registered · 2 of 2 announcements
- Route objects
- 3 naming AS22437
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