Anyone can tell me why Verizon bgp as is 701

Hi Why Verizon BGP as # is 701? If it is public bgp as number, it should be 5 digital, instead of 3 digital, do you think so ?
eemoonAsked:
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Ken BooneNetwork ConsultantCommented:
Yes, initially BGP used a 2 byte AS number, now it can support a 4 byte number.  Here is the RFC that put out in 2007 to expand the AS number from 2 bytes to 4 bytes.  Verizon had this AS number from way back when they were MCI.  It is perfectly legit.

https://tools.ietf.org/html/rfc4893
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eemoonAuthor Commented:
thank you so much for your fast reply. So that means 701 is still public as #, right ?
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