Autonomous system profile

Review registration details, announced prefixes, network relationships and historical snapshots.

AS204921

Announcement observedRIPE NCC

YunZheng-Network zhenyun sun · YunZheng-Network

This profile is assembled from CHA.LA's normalized registration, routing and observation snapshots.

Last active10/18/2026, 03:15:14Snapshot expired

View network topology RDAP registration

ASN: AS204921
Registration country: Estonia
Name: YunZheng-Network zhenyun sun
Abbreviation: YunZheng-Network
Registration date: 10/10/2025, 09:11:08
Status: Announcement observed
RIR: RIPE NCC

Network relationships and announced prefixes

ASN / prefix	Description / organization	Geographic scope	First seen	Last active	IPv4	IPv6	Status
177.177.80.0/22BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/22/2026, 00:00:00	10/16/2026, 08:00:00	✓	×	Currently valid
177.177.80.0/23BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/22/2026, 00:00:00	10/16/2026, 08:00:00	✓	×	Currently valid
177.177.80.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/22/2026, 00:00:00	10/16/2026, 08:00:00	✓	×	Currently valid
177.177.81.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/22/2026, 00:00:00	10/16/2026, 08:00:00	✓	×	Currently valid
177.177.82.0/23BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/22/2026, 00:00:00	10/16/2026, 08:00:00	✓	×	Currently valid
177.177.83.0/24BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/22/2026, 00:00:00	10/16/2026, 08:00:00	✓	×	Currently valid

BGP prefixes have no geographic country; the column is marked not applicable.

Registration and sources

Organization: YunZheng-Network zhenyun sun
RIR: RIPE NCC
Registration country: Estonia
Registration date: 10/10/2025, 09:11:08
Abuse contact: noc@as204921.net

Snapshot trend

10/18/2026, 03:15:146 v420 v620 Upstream · 18 Uncertain

10/16/2026, 17:36:136 v420 v622 Upstream · 18 Uncertain

10/15/2026, 07:06:046 v420 v623 Upstream · 18 Uncertain

10/11/2026, 19:25:206 v420 v623 Upstream · 18 Uncertain

10/9/2026, 11:16:536 v420 v623 Upstream · 19 Uncertain

10/6/2026, 06:22:346 v420 v623 Upstream · 18 Uncertain

ASN route snapshotThis page reads collected ASN, prefix, relationship and history data. External interfaces are used for initial collection and scheduled refreshes.Source keys: cha-la-external-routing · rir-rdap-asn · iana-rdap-asn-bootstrap