Autonomous system
AS11281 ROBLOX-CORPORATE
Unclassified ARIN
Summary
Roblox Corporation (corporate network)
enterprise legacy
ROBLOX-CORPORATE is the corporate/office network of Roblox Corporation, the San Mateo, California company behind the Roblox gaming platform. It is deliberately not the platform: RIS sees only 9 IPv4 prefixes, 2,304 addresses, 2 IPv6 /48s and 7 observed neighbours.
What it's used for
Roblox's own enterprise footprint — offices, corporate IT, and the edge of its internal network — rather than the player-facing game service. The scale settles it. A platform serving tens of millions of concurrent users cannot run on 2,304 addresses behind seven neighbours; that is an ordinary large-enterprise silhouette. Roblox's production platform lives on a separate, much larger ASN, AS22697, which announces an order of magnitude more space and reaches the internet through many more upstreams. When you see traffic from AS11281, you are almost certainly looking at Roblox the employer, not Roblox the game.
Notable
Every announced prefix is registered to Roblox itself — RC-1406 (org: Roblox Corporation) across the 204.13.168.0–204.13.174.0 run and 204.9.184.0/24, plus ROBLOX-NET5 on 23.173.192.0/24. Self-registered space announced by its own holder, with contiguous /24s from a single RIR: a plain first-party enterprise inventory with none of the scattered-registrant, multi-RIR shape of leased address space.
Interesting
This is a textbook case of a low AS number that is not an old network. AS11281 sits in a range handed out in the 1990s, but ARIN's registry shows this number registered to Roblox on 18 October 2017 and last changed nine days later. The number was recycled; the holder is a company that did not exist when the number was first issued. Read the registry, not the digits.
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 2026-10-14, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 5 prefixes · 2.30K addresses IPv6 1 prefixes
| Country | Name | Prefixes |
|---|---|---|
| US | United States of America | 6 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS11281- Registry name
- ROBLOX-CORPORATE
- Registrant
- Roblox
- Abuse contact
- network-abuse@roblox.com
- Registered
- 2017-10-18
- Last changed
- 2017-10-27
- Allocation
- assigned
Routing security
RPKI and IRR
- RPKI
- 100% valid · 11 valid, 0 with no ROA
- ROAs
- 5 authorising AS11281
- ASPA
- no ASPA record
- IRR
- 100% registered · 11 of 11 announcements
- Route objects
- 17 naming AS11281
Reputation
Classification and threat
Unclassified Not in the curated lists. Most of the ~80,000 allocated ASNs are not.
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