AS8869 SBS-AS2

SBS-AS2 is held by **Atos Bilişim Danışmanlık ve Müşteri Hizmetleri Sanayi ve

Ticaret A.Ş., the Turkish arm of the IT services group Atos**, based at Yakacık

Cad. in Kartal, Istanbul.

What it's used for

• IT outsourcing and managed services for Turkish enterprise customers. The AS announces 212.133.128.0/18 plus one more-specific /24 — roughly 16k IPv4 addresses — and is single-homed, with just one observed BGP neighbour. That is an end-site/managed-services footprint, not a carrier.

Notable

• The SBS in the handle is Siemens Business Services. Atos absorbed Siemens IT Solutions and Services in 2011, and the AS handle was never renamed — a fossil of the previous holder rather than anything to do with the current name.
• The A.Ş. suffix is anonim şirket, the Turkish joint-stock company form. It is a corporate suffix, not a network term.
• No IPv6 is announced.
• No reverse DNS is delegated on the announced space — the in-addr.arpa zones under 133.212 return no nameservers at all, so the /18 is dark in reverse rather than merely missing PTRs. Unremarkable for corporate and client-facing systems that are reached by forward name, but it does mean there is no direct evidence of what the block carries: the classification rests on the holder, the ATOS_MAIN_NET registration and the single-homed end-site shape.