运营商的公网 IP 百年不变吗...

我上海电信也是万能不变在 116.230 段，关机两天还是这个段 116.224.0.0 - 116.239.255.255
netname: CHINANET-SH
descr: CHINANET Shanghai province network
descr: China Telecom
descr: No.31,jingrong street
descr: Beijing 100032
country: CN
admin-c: WWQ4-AP
tech-c: WWQ4-AP
abuse-c: AC1573-AP
status: ALLOCATED PORTABLE
remarks: --------------------------------------------------------
remarks: To report network abuse, please contact mnt-irt
remarks: For troubleshooting, please contact tech-c and admin-c
remarks: Report invalid contact via www.apnic.net/invalidcontact
remarks: --------------------------------------------------------
mnt-by: APNIC-HM
mnt-lower: MAINT-CHINANET-SH
mnt-routes: MAINT-CHINANET-SH
mnt-irt: IRT-CHINANET-CN
last-modified: 2021-06-15T08:06:29Z
source: APNIC

就这几天万年不变的网段突然变了