bgpto.me
IP PREFIX

218.21.240.0/20

Originated by AS4837 · CHINA169-Backbone - CHINA UNICOM China169 Backbone

AnnouncedCNAPNIC
www.chinaunicom.cn/
Website preview from public registry data for AS4837
Registry websiteOpen site ↗

RPKI & ROA validation

CURRENT STATE

valid

No matching VRP was returned by RIPE Routinator.

ROA prefixOriginMax lengthStatus
218.21.240.0/20AS4837/20valid
218.21.128.0/17AS4837/17invalid_length

Routing registry consistency

218.21.128.0/17AS4837 — CHINA169-Backbone - CHINA UNICOM China169 BackboneSeen in BGPNTTCOM, RADB, APNIC
218.21.252.0/23AS139007 — UNICOM-NM-WuLanChaBu-IDC - UNICOM InnerMongolia province networkSeen in BGPAPNIC
218.21.240.0/20AS4837 — CHINA169-Backbone - CHINA UNICOM China169 BackboneSeen in BGPNTTCOM, RADB
218.21.252.0/23AS4837 — CHINA169-Backbone - CHINA UNICOM China169 BackboneNot in BGPAPNIC
218.21.254.0/24AS139007 — UNICOM-NM-WuLanChaBu-IDC - UNICOM InnerMongolia province networkSeen in BGPAPNIC
218.21.248.0/22AS139007 — UNICOM-NM-WuLanChaBu-IDC - UNICOM InnerMongolia province networkSeen in BGPAPNIC
218.21.254.0/24AS4837 — CHINA169-Backbone - CHINA UNICOM China169 BackboneNot in BGPAPNIC
218.21.248.0/22AS4837 — CHINA169-Backbone - CHINA UNICOM China169 BackboneNot in BGPAPNIC

Recent RPKI history

DateCovered prefixVRPsMax length
23/09/2026218.21.240.0/201/20
22/09/2026218.21.240.0/201/20
21/09/2026218.21.240.0/201/20
20/09/2026218.21.240.0/201/20
19/09/2026218.21.240.0/201/20
18/09/2026218.21.240.0/201/20
17/09/2026218.21.240.0/201/20
16/09/2026218.21.240.0/201/20
15/09/2026218.21.240.0/201/20
14/09/2026218.21.240.0/201/20
13/09/2026218.21.240.0/201/20
12/09/2026218.21.240.0/201/20