react-native-cli のインストール時にエラー

Question

前提・実現したいこと

npm で react-native-cli をインストールしようとすると以下のエラーが発生します。
ReactNative は普段 Expo で開発を行っているのですが、今回はネイティブコードも組み込んでいきたいので react-native-cli を入れたいという状況です。
このエラーは環境によるもの？なのでしょうか。それとも何か解決方法があるでしょうか。

発生している問題・エラーメッセージ

$ npm install -g react-native-cli
npm ERR! request to https://registry.npmjs.org/react-native-cli failed, reason: Hostname/IP doesn't match certificate's altnames: "Host: registry.npmjs.org. is not in the cert's altnames: DNS:a.sni.fastly.net, DNS:a.sni.global-ssl.fastly.net"

npm ERR! A complete log of this run can be found in:
npm ERR!     /Users/tanakakota/.npm/_logs/2018-09-01T11_54_26_232Z-debug.log

$ cat /Users/tanakakota/.npm/_logs/2018-09-01T11_54_26_232Z-debug.log
0 info it worked if it ends with ok
1 verbose cli [ '/usr/local/bin/node',
1 verbose cli   '/usr/local/bin/npm',
1 verbose cli   'install',
1 verbose cli   '-g',
1 verbose cli   'react-native-cli' ]
2 info using npm@6.2.0
3 info using node@v8.11.1
4 verbose npm-session a5a3370e9e8f53fc
5 silly install loadCurrentTree
6 silly install readGlobalPackageData
7 silly fetchPackageMetaData error for react-native-cli@latest request to https://registry.npmjs.org/react-native-cli failed, reason: Hostname/IP doesn't match certificate's altnames: "Host: registry.npmjs.org. is not in the cert's altnames: DNS:a.sni.fastly.net, DNS:a.sni.global-ssl.fastly.net"
8 timing stage:rollbackFailedOptional Completed in 2ms
9 timing stage:runTopLevelLifecycles Completed in 287ms
10 verbose type system
11 verbose stack FetchError: request to https://registry.npmjs.org/react-native-cli failed, reason: Hostname/IP doesn't match certificate's altnames: "Host: registry.npmjs.org. is not in the cert's altnames: DNS:a.sni.fastly.net, DNS:a.sni.global-ssl.fastly.net"
11 verbose stack     at ClientRequest.req.on.err (/usr/local/lib/node_modules/npm/node_modules/node-fetch-npm/src/index.js:68:14)
11 verbose stack     at emitOne (events.js:116:13)
11 verbose stack     at ClientRequest.emit (events.js:211:7)
11 verbose stack     at TLSSocket.socketErrorListener (_http_client.js:387:9)
11 verbose stack     at emitOne (events.js:116:13)
11 verbose stack     at TLSSocket.emit (events.js:211:7)
11 verbose stack     at emitErrorNT (internal/streams/destroy.js:64:8)
11 verbose stack     at _combinedTickCallback (internal/process/next_tick.js:138:11)
11 verbose stack     at process._tickCallback (internal/process/next_tick.js:180:9)
12 verbose cwd /Users/tanakakota/Bitbucket-local/react-goods-manager
13 verbose Darwin 17.4.0
14 verbose argv "/usr/local/bin/node" "/usr/local/bin/npm" "install" "-g" "react-native-cli"
15 verbose node v8.11.1
16 verbose npm  v6.2.0
17 error request to https://registry.npmjs.org/react-native-cli failed, reason: Hostname/IP doesn't match certificate's altnames: "Host: registry.npmjs.org. is not in the cert's altnames: DNS:a.sni.fastly.net, DNS:a.sni.global-ssl.fastly.net"
18 verbose exit [ 1, true ]