AS11227 — AS-DALLAS - Morningstar, Inc.

AS11227 announces 4 IPv4 prefixes covering 1,536 addresses and 0 IPv6 prefixes.

About this network

AS-DALLAS belongs to Morningstar, Inc., the Chicago-based investment-research and financial-data company (ARIN org MORNIN, 22 W. Washington Street, Chicago, Illinois). The handle names a site, not a company: it is an internal label for a Morningstar facility, and it is a good example of why an AS handle should never be read as a brand.

What it's used for

Corporate enterprise networking for a single company. RIS sees four IPv4 prefixes carrying roughly 1,536 addresses and no IPv6, learned through only four observed neighbours. That combination is diagnostic: an eyeball or wholesale network of any size peers with far more than four ASes, so this is a multihomed enterprise buying transit from a small number of upstreams, announcing its own office and data-centre space. Every prefix in the pack (216.228.228.0/23, 216.228.232.0/24, 216.228.236.0/23, 204.238.50.0/24) is registered to MORNINGSTAR-INC-IP-BLOCK — the holder announces only space registered to itself, which rules out the leasing/broker shape entirely.

Notable

The address footprint is small and stable. Morningstar's public-facing products (Morningstar.com, Direct, the ratings feeds) are largely served from commercial hosting and CDNs rather than from this AS, so what remains here is corporate infrastructure rather than the consumer web presence you would expect from the brand name.

Interesting

ARIN records the number as registered to Morningstar since 2007, so despite the low five-digit AS number this is not a relic of the early commercial internet.

This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy.

Announced prefixes

• 204.238.50.0/24
• 216.228.228.0/23
• 216.228.232.0/24
• 216.228.236.0/23

Upstream networks

• AS1299 Arelion Sweden AB
• AS33132 Crown Castle Fiber LLC
• AS3491 PCCW Global (HK) Ltd.
• AS4637 Telstra Global

Adjacent networks

• AS1299 Arelion Sweden AB
• AS33132 Crown Castle Fiber LLC
• AS3491 PCCW Global (HK) Ltd.
• AS4637 Telstra Global

Routing security

• RPKI: 0 valid, 0 invalid and 4 not-found announcements; 0 ROAs.
• ASPA: none published.
• IRR: 100% of announcements registered; 5 route objects.
• Listed in as-sets: AS-ANC-CUSTOMER-PROXY-REGISTER, AS-KDDCUSTOMER2, AS-PACNET-DOWNSTREAM-HK, AS-PACNET-DOWNSTREAM-PH, AS-TELSTRA-INTL-CUSTOMERS, AS-WINDSTREAM-CUST, AS1299:AS-TWELVE99-NA-V4, AS1299:AS-TWELVE99-NA-V6, AS33132:AS-CUSTOMERS.