Autonomous system
AS27281 QUANTCAST
Hosting ARIN Content
Summary
Quantcast
adtech business global data
The AS handle QUANTCAST is operated by Quantcast Corporation.
What it's used for
- The address space carries infrastructure for a global advertising technology platform, evidenced by netnames
QCAST,QUANTCAST-UK, andQUANTCAST-APregistered to Quantcast entities. - The AS announces 3584 IPv4 addresses across 7 prefixes and 7 IPv6 prefixes, while maintaining 123 observed neighbours; this ratio of modest address inventory against a high neighbour count indicates a business network with significant peering and transit relationships rather than a large-scale access provider.
Notable
- Registrants align with the announcer, including Quantcast Corporation for US blocks and Quantcast Ltd. for UK blocks, confirming consistent ownership across regions.
- The inventory is subdivided into distinct regional blocks, including US space in the 192.184.0.0/16 range, UK space in 91.228.0.0/16, and AP space in 103.229.0.0/16, reflecting a global corporate estate structure.
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 5 exchanges in 3 countries, largest first.
| Exchange | Location | Their address |
|---|---|---|
| DE-CIX Frankfurt | Frankfurt, Germany | 80.81.194.194 |
| Equinix Internet Exchange Singapore | Singapore, Singapore | 27.111.229.124 |
| Equinix Internet Exchange Ashburn | Ashburn, United States | 206.126.238.59 |
| Seattle Internet Exchange | Seattle, United States | 206.81.81.231 |
| Equinix Internet Exchange San Jose (Bay Area) | San Jose, United States | 206.223.116.41 |
Transit providers
32 upstream, 0 downstream and 47 adjacent networks observed; most-used upstreams first.
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-11, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 7 prefixes · 3.58K addresses IPv6 7 prefixes
| Country | Name | Prefixes |
|---|---|---|
| US | United States of America | 14 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS27281- Registry name
- QUANTCAST
- Registrant
- Quantcast Corporation
- Abuse contact
- datacenter-ops@quantcast.com
- Registered
- 2007-11-27
- Last changed
- 2012-04-02
- Allocation
- assigned
Declared
PeeringDB profile
- Name
- Quantcast
- Network type
- Content
- Scope
- Global
- Traffic ratio
- Balanced
- Peering policy
- Selective
- IRR as-set
AS27281:AS-SET- Present at
- 5 exchanges
- Facilities
- 5 facilities
- Website
- http://www.quantcast.com
PeeringDB records are maintained by the network operator and are not independently verified. Treat them as a statement of intent rather than of fact. For the observed and recorded view, see peering, which lists the exchanges Packet Clearing House has a port on file for.
Routing security
RPKI and IRR
- RPKI
- 59% valid · 16 valid, 11 with no ROA
- ROAs
- 19 authorising AS27281
- ASPA
- no ASPA record
- IRR
- 100% registered · 27 of 27 announcements
- Route objects
- 38 naming AS27281
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 1,768 prefixes, as published 2026-10-12. 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