AS11939 MATHWORKS

MATHWORKS is The MathWorks, Inc. of Natick, Massachusetts, the company behind MATLAB and Simulink. This is its global corporate network, and it is unusually well-consolidated for an enterprise of this size.

What it's used for

RIS shows 26 IPv4 prefixes totalling 65,536 addresses, no IPv6, and eight observed BGP neighbours. The address count is the giveaway: it equals a single /16 exactly. MathWorks holds 144.212.0.0/16, announces the covering prefix, and then announces 25 more-specifics from inside it, ranging down to individual /24s. Those more-specifics do not add address space. They are traffic engineering, steering particular subnets toward particular upstreams while the aggregate keeps everything reachable if a specific route is lost.

Every prefix in the pack is registered in ARIN to MATHWORKS, org THE MATHWORKS, INC. There is no third-party registrant anywhere in the inventory, no scattered space from other registries, and no leasing pattern. The one sampled PTR, 144-212-192-5.mathworks.co.uk, is first-party reverse DNS pointing at the company's UK operation, which confirms the space carries MathWorks' own sites rather than someone else's traffic.

Notable

Eight neighbours against a full /16 is an enterprise, not a provider: a carrier with this much address space would peer with hundreds. Everything here is consistent with a single company running product downloads, license servers, corporate systems and international offices out of one legacy /16 it has held for a long time.