Autonomous system
AS29987 SINFONY6
Unclassified ARIN
Summary
Sinfony6
education research business
The AS handle SINFONY6 is held by Sinfony6, LLC.
What it's used for
- The address space carries prefixes registered to MEGA INFRA SOLUCOES EM INFRAESTRUTURA LTDA (netname
558365) and Sinfony6, LLC (netnameSINFONY-6-IPV4). - The network announces 5632 IPv4 addresses across 4 prefixes with 4 observed neighbours, indicating a small-scale access or research network rather than a transit provider.
Notable
- Registrants include MEGA INFRA SOLUCOES EM INFRAESTRUTURA LTDA for the 187.31.16.0/22 and 187.31.20.0/24 blocks, and Sinfony6, LLC for the 23.134.108.0/24 block.
- The address inventory consists of four distinct IPv4 prefixes, with no IPv6 prefixes in the inventory.
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 1 exchange in 1 country, largest first.
| Exchange | Location | Their address |
|---|---|---|
| Kansas City Internet Exchange | Kansas City, United States | 206.51.7.102 |
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 4 prefixes · 6.40K addresses IPv6 0 prefixes
| Country | Name | Prefixes |
|---|---|---|
| US | United States of America | 4 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS29987- Registry name
- SINFONY6
- Registrant
- Sinfony6, LLC
- Abuse contact
- network@sinfony6.com
- Registered
- 2025-02-11
- Last changed
- 2025-02-11
- Allocation
- assigned
Routing security
RPKI and IRR
- RPKI
- 0% valid · 0 valid, 22 with no ROA 18 RPKI-invalid
- ROAs
- 1 authorising AS29987
- ASPA
- no ASPA record
- IRR
- 55% registered · 22 of 40 announcements
- Route objects
- 3 naming AS29987
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: 443 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