A question about networks - in connection with the sanctions. Can I embed my AS in EBGP without registering it with IANA?

Question

Cisco

Inspired by the behavior of Cisco.
Sorry, after all, training according to the Bologna system has obvious drawbacks. They tell what and how it works, if everything goes well. Stevens William thought differently and showed in practice the differences between the implementation and the RFC using a specific OS as an example.
It also made me think and remember the device of the Internet.
Let’s say sanctions are imposed on Russia and IANA stops issuing IP addresses…
Well, we have our own root name servers, raising the child ones is not a problem. All IPv6 addresses have not yet been allocated, so you can take a couple of blocks from the unallocated ones yourself. Yes, and from distributed ones too - after all, the conflict of IP addresses happens only within the same network. And it's not about the address, but about building a route to it. And in order to fit into the BGP routing scheme, you need to have your own autonomous system (AS) - but ASNs (AS numbers) are also assigned (and registered) by IANA.
So, it turns out that I know very little about how AS works.. Is there a way to embed into the Internet system, ignoring IANA and prescribing your own routes to specific IP addresses? I can conduct such an experiment at home, but sorry - the Internet is not a home network, but the routers in it must trust each other. Feeding a couple of left routes to the External BGP Internet router is a slightly more complicated task and clearly exceeds the capabilities of a home experiment.
I have no illusions: the issued addresses are tied to the area and to determine which country a particular address belongs to and block it - even our Roskomnadzor successfully manages to block the whole of Russia - the United States will have enough strength and capabilities. No, the Internet will not go anywhere within the country, and communication with other countries will not be interrupted. Yes, and they most likely will not do this ... but purely hypothetically - is there a way to change the route to a specific IP address, ignoring the registration of an autonomous system with IANA?
And in principle, is it possible to create your own system for registering AS, independent of the USA?

Answer 1

And in principle, is it possible to create your own system for registering AS, independent of the USA?

Yes. It is necessary to create a regional registrar by analogy with the RIPE NCC and entrust it with the responsibility to maintain a register of ASNs and IP blocks. But at the junction with external networks in Europe, routes from this register will be discarded, since filters for European operators are built according to the RIPE NCC register. It will be cooler if RIPE NCC takes away ASN and IP from Russia and sells them to other countries by another operator. In principle, this will be the notorious "Iron Curtain" lowered from the outside.