AS7609 MSMSL-AS-AP Morgan Stanley Management Service Shanghai Limited

MSMSL-AS-AP belongs to Morgan Stanley Management Service (Shanghai) Limited, the Chinese service entity of the US investment bank. AS7609 is a corporate network, not a provider network.

What it's used for

• A single small allocation, 103.183.66.0/23, announced as the /23 and a covering /24. There is no reverse DNS on it, which is normal for a bank's internal and DMZ addressing.
• The space serves Morgan Stanley's own offices and systems in Shanghai. It has no customers, no hosting tenants and no subscriber pools.

Notable

• Financial-sector enterprise space. Traffic from these addresses is bank staff and bank systems, not consumers, and it should be geolocated to a corporate site rather than to a residential or datacentre pool.
• APNIC's record for the autnum was created in March 2022, far later than the number's neighbours. AS7609 is a low number that has been reissued to a modern holder; it carries none of the early-internet pedigree that a four-digit ASN might otherwise suggest.

Interesting

• The number sits in a stretch of the low-7600s dominated by 1990s-era Asia-Pacific research networks, universities and broadcasters. A 2022 assignment to a foreign bank's Shanghai back-office entity is a good reminder that APNIC recycles returned numbers, and that a low AS number is not by itself evidence of age.