On November 27, 2023, a scheduled change of IPv4 and IPv6 addresses took place for one of the 13 root DNS servers that maintains the DNS root zone. For the B.ROOT-SERVERS.NET server, IP addresses 199.9.14.201 now uses 170.247.170.2, and 2001:500:200::b is now 2801:1b8:10::b. Despite the change in the root DNS server list, the old addresses will continue to accept queries until at least November 27, 2024. However, DNS server administrators are advised not to delay making configuration changes (root-hints or named.root for the BIND package).
The change of addresses was made as part of the work to improve the reliability of the root infrastructure servers By diversifying the bindings to addresses of various regional internet registries (RIRs). Specifically, the new address 170.247.170.2 was allocated by LACNIC (Latin America and Caribbean Network Information Centre), a registrar not previously involved in the operation of root servers.
The address change mitigated the situation where some registrars, such as the Latin American LACNIC and the African AFRINIC, were not involved at all in maintaining root DNS servers, while the ARIN (American Registry for Internet Numbers) registrar provided addresses for 10 of the 13 available. root servers (of the remaining three IP addresses, two were associated with the European RIPE, and one with the Asian APNIC).
The current file from the lists of root servers can be obtained with the command “dig ns. @a.root-servers.net" or download from the InterNIC website.
Source: opennet.ru
