bgpreport

Network · data from 2026-11-12

AS4641 The Chinese University of Hong Kong

Registry name: HKIX-AS-AP - The Hong Kong Internet Exchange Limited, HK · PeeringDB

29IPv4 routes 3.4% RPKI valid · 10.3% with a route object
10IPv6 routes 0.0% RPKI valid · 20.0% with a route object
0RPKI invalid 0 origin · 0 maxLength
38No ROA 34 with no route object for this origin
35Low visibility seen by under 10% of full-table peers
12Route objects not announced registered with origin AS4641, seen from no peer

Announced routes

Every prefix a peer of the route collectors sees with origin AS4641, things to look at first. Visibility = full-table peers that see it, of 673 (IPv4) and 636 (IPv6) on 75 collectors. Also as routes.csv.
2405:3001:1:1ea::/64 No ROA Nonecovered by 2405:3001::/32 10 2%low visibility 7
123.255.103.0/24 No ROA Nonecovered by 123.255.96.0/19 2 0%low visibility 1
123.255.111.0/24 No ROA Nonecovered by 123.255.96.0/19 2 0%low visibility 1
202.45.183.0/24 No ROA Nonecovered by 202.45.176.0/20 2 0%low visibility 1
202.45.187.0/24 No ROA Nonecovered by 202.45.176.0/20 2 0%low visibility 1
202.45.188.0/29 No ROA Nonecovered by 202.45.188.0/24 2 0%low visibility 1
202.45.188.16/28 No ROA Nonecovered by 202.45.188.0/24 2 0%low visibility 1
202.45.188.28/32 No ROA Nonecovered by 202.45.188.0/24 2 0%low visibility 2
202.45.188.32/27 No ROA Nonecovered by 202.45.188.0/24 2 0%low visibility 1
202.45.188.80/28 No ROA Nonecovered by 202.45.188.0/24 2 0%low visibility 1
202.45.188.116/30 No ROA Nonecovered by 202.45.188.0/24 2 0%low visibility 1
202.45.188.136/29 No ROA Nonecovered by 202.45.188.0/24 2 0%low visibility 1
202.45.188.144/28 No ROA Nonecovered by 202.45.188.0/24 2 0%low visibility 1
202.45.188.176/28 No ROA Nonecovered by 202.45.188.0/24 2 0%low visibility 1
202.45.188.216/29 No ROA Nonecovered by 202.45.188.0/24 2 0%low visibility 1
202.45.189.0/28 No ROA Nonecovered by 202.45.189.0/24 2 0%low visibility 1
202.45.189.16/29 No ROA Nonecovered by 202.45.189.0/24 2 0%low visibility 1
202.45.189.32/27 No ROA Nonecovered by 202.45.189.0/24 2 0%low visibility 1
202.45.189.72/29 No ROA Nonecovered by 202.45.189.0/24 2 0%low visibility 1
202.45.189.96/27 No ROA Nonecovered by 202.45.189.0/24 2 0%low visibility 1
202.45.189.128/26 No ROA Nonecovered by 202.45.189.0/24 2 0%low visibility 1
202.45.189.241/32 No ROA Nonecovered by 202.45.189.0/24 2 0%low visibility 1
202.45.189.242/32 No ROA Nonecovered by 202.45.189.0/24 2 0%low visibility 1
202.45.189.248/29 No ROA Nonecovered by 202.45.189.0/24 2 0%low visibility 1
202.45.190.0/25 No ROA Nonecovered by 202.45.190.0/24 2 0%low visibility 1
202.45.190.160/27 No ROA Nonecovered by 202.45.190.0/24 2 0%low visibility 1
2405:3001:0:bc:193::/120 No ROA Nonecovered by 2405:3001::/32 2 0%low visibility 1
2405:3001:0:bc:1b7::/119 No ROA Nonecovered by 2405:3001::/32 2 0%low visibility 1
2405:3001:1:1a9::/124 No ROA Nonecovered by 2405:3001::/32 2 0%low visibility 1
2405:3001:1:1e9::/120 No ROA Nonecovered by 2405:3001::/32 2 0%low visibility 1
2405:3001:1:1ea::6/128 No ROA Nonecovered by 2405:3001::/32 2 0%low visibility 1
2405:3001:1:1ef::1/128 No ROA Nonecovered by 2405:3001::/32 2 0%low visibility 1
2405:3001:1:1f4::/64 No ROA Nonecovered by 2405:3001::/32 2 0%low visibility 1
2405:3001:1:3a::/64 No ROA Other IRR onlyRADB 2 0%low visibility 1
123.255.96.0/19 No ROA RIR databaseAPNIC 672 100% 67
202.45.177.0/24 No ROA RIR databaseAPNIC 671 100% 67
202.45.176.0/20 No ROA RIR databaseAPNIC, NTTCOM, RADB 668 99% 67
2405:3001::/32 No ROA RIR databaseAPNIC 636 100% 69
202.45.191.0/24 Valid Nonecovered by 202.45.176.0/20 2 0%low visibility 1

AS-SET

PeeringDB's irr_as_set for AS4641: APNIC::AS4641:AS-CUHK-TRANSIT. Expanded from the day's IRR dumps the way bgpq4 does against whois.radb.net: a name with a database is read from that database only, one without from the first database in RADB's order. "Not covered" = this network's own routes that a filter built from the set would leave out (AS4641 isn't in the set, or no route object for AS4641 covers the route; more-specifics of a route object are accepted down to /24 and /48, as with bgpq4 -A -R 24 / -R 48). Customers' routes aren't counted: the collectors show each route's origin, not which network it came through.

NameDatabaseASNsSets Route objectsAS4641 in itNot covered
APNIC::AS4641:AS-CUHK-TRANSIT APNIC1 member set in no database: AS-PCH 111433 Yes 29

Fix list

The changes that would bring RPKI, the IRR and what's announced into line. Some are deliberate (a route object kept for a backup route, say); the network decides. All 86 are in fix.csv.

  • ROA: none38
  • Route object: none34
  • Route object: RIR1
  • AS-SET: missing member1
  • Route object: not announced12
ChangePrefix or setDetailFull-table peers
ROA: none2405:3001:1:1ea::/64No ROA covers it. Add a ROA for AS4641, maxLength 64.10 of 636
Route object: none2405:3001:1:1ea::/64No route object for it. A route object for 2405:3001::/32 with origin AS4641 covers it (too long for filters allowing more-specifics up to /48). Add a route object with origin AS4641 in the RIR database for the space.10 of 636
ROA: none123.255.103.0/24No ROA covers it. Add a ROA for AS4641, maxLength 24.2 of 673
Route object: none123.255.103.0/24No route object for it. A route object for 123.255.96.0/19 with origin AS4641 covers it (filters allowing more-specifics accept it). Add a route object with origin AS4641 in the RIR database for the space.2 of 673
ROA: none123.255.111.0/24No ROA covers it. Add a ROA for AS4641, maxLength 24.2 of 673
Route object: none123.255.111.0/24No route object for it. A route object for 123.255.96.0/19 with origin AS4641 covers it (filters allowing more-specifics accept it). Add a route object with origin AS4641 in the RIR database for the space.2 of 673
ROA: none202.45.183.0/24No ROA covers it. Add a ROA for AS4641, maxLength 24.2 of 673
Route object: none202.45.183.0/24No route object for it. A route object for 202.45.176.0/20 with origin AS4641 covers it (filters allowing more-specifics accept it). Add a route object with origin AS4641 in the RIR database for the space.2 of 673
ROA: none202.45.187.0/24No ROA covers it. Add a ROA for AS4641, maxLength 24.2 of 673
Route object: none202.45.187.0/24No route object for it. A route object for 202.45.176.0/20 with origin AS4641 covers it (filters allowing more-specifics accept it). Add a route object with origin AS4641 in the RIR database for the space.2 of 673
ROA: none202.45.188.0/29No ROA covers it. Add a ROA for AS4641, maxLength 29.2 of 673
Route object: none202.45.188.0/29No route object for it. A route object for 202.45.188.0/24 with origin AS4641 covers it (too long for filters allowing more-specifics up to /24). Add a route object with origin AS4641 in the RIR database for the space.2 of 673
ROA: none202.45.188.16/28No ROA covers it. Add a ROA for AS4641, maxLength 28.2 of 673
Route object: none202.45.188.16/28No route object for it. A route object for 202.45.188.0/24 with origin AS4641 covers it (too long for filters allowing more-specifics up to /24). Add a route object with origin AS4641 in the RIR database for the space.2 of 673
ROA: none202.45.188.28/32No ROA covers it. Add a ROA for AS4641, maxLength 32.2 of 673
Route object: none202.45.188.28/32No route object for it. A route object for 202.45.188.0/24 with origin AS4641 covers it (too long for filters allowing more-specifics up to /24). Add a route object with origin AS4641 in the RIR database for the space.2 of 673
ROA: none202.45.188.32/27No ROA covers it. Add a ROA for AS4641, maxLength 27.2 of 673
Route object: none202.45.188.32/27No route object for it. A route object for 202.45.188.0/24 with origin AS4641 covers it (too long for filters allowing more-specifics up to /24). Add a route object with origin AS4641 in the RIR database for the space.2 of 673
ROA: none202.45.188.80/28No ROA covers it. Add a ROA for AS4641, maxLength 28.2 of 673
Route object: none202.45.188.80/28No route object for it. A route object for 202.45.188.0/24 with origin AS4641 covers it (too long for filters allowing more-specifics up to /24). Add a route object with origin AS4641 in the RIR database for the space.2 of 673
ROA: none202.45.188.116/30No ROA covers it. Add a ROA for AS4641, maxLength 30.2 of 673
Route object: none202.45.188.116/30No route object for it. A route object for 202.45.188.0/24 with origin AS4641 covers it (too long for filters allowing more-specifics up to /24). Add a route object with origin AS4641 in the RIR database for the space.2 of 673
ROA: none202.45.188.136/29No ROA covers it. Add a ROA for AS4641, maxLength 29.2 of 673
Route object: none202.45.188.136/29No route object for it. A route object for 202.45.188.0/24 with origin AS4641 covers it (too long for filters allowing more-specifics up to /24). Add a route object with origin AS4641 in the RIR database for the space.2 of 673
ROA: none202.45.188.144/28No ROA covers it. Add a ROA for AS4641, maxLength 28.2 of 673
Route object: none202.45.188.144/28No route object for it. A route object for 202.45.188.0/24 with origin AS4641 covers it (too long for filters allowing more-specifics up to /24). Add a route object with origin AS4641 in the RIR database for the space.2 of 673
ROA: none202.45.188.176/28No ROA covers it. Add a ROA for AS4641, maxLength 28.2 of 673
Route object: none202.45.188.176/28No route object for it. A route object for 202.45.188.0/24 with origin AS4641 covers it (too long for filters allowing more-specifics up to /24). Add a route object with origin AS4641 in the RIR database for the space.2 of 673
ROA: none202.45.188.216/29No ROA covers it. Add a ROA for AS4641, maxLength 29.2 of 673
Route object: none202.45.188.216/29No route object for it. A route object for 202.45.188.0/24 with origin AS4641 covers it (too long for filters allowing more-specifics up to /24). Add a route object with origin AS4641 in the RIR database for the space.2 of 673
ROA: none202.45.189.0/28No ROA covers it. Add a ROA for AS4641, maxLength 28.2 of 673
Route object: none202.45.189.0/28No route object for it. A route object for 202.45.189.0/24 with origin AS4641 covers it (too long for filters allowing more-specifics up to /24). Add a route object with origin AS4641 in the RIR database for the space.2 of 673
ROA: none202.45.189.16/29No ROA covers it. Add a ROA for AS4641, maxLength 29.2 of 673
Route object: none202.45.189.16/29No route object for it. A route object for 202.45.189.0/24 with origin AS4641 covers it (too long for filters allowing more-specifics up to /24). Add a route object with origin AS4641 in the RIR database for the space.2 of 673
ROA: none202.45.189.32/27No ROA covers it. Add a ROA for AS4641, maxLength 27.2 of 673
Route object: none202.45.189.32/27No route object for it. A route object for 202.45.189.0/24 with origin AS4641 covers it (too long for filters allowing more-specifics up to /24). Add a route object with origin AS4641 in the RIR database for the space.2 of 673
ROA: none202.45.189.72/29No ROA covers it. Add a ROA for AS4641, maxLength 29.2 of 673
Route object: none202.45.189.72/29No route object for it. A route object for 202.45.189.0/24 with origin AS4641 covers it (too long for filters allowing more-specifics up to /24). Add a route object with origin AS4641 in the RIR database for the space.2 of 673
ROA: none202.45.189.96/27No ROA covers it. Add a ROA for AS4641, maxLength 27.2 of 673
Route object: none202.45.189.96/27No route object for it. A route object for 202.45.189.0/24 with origin AS4641 covers it (too long for filters allowing more-specifics up to /24). Add a route object with origin AS4641 in the RIR database for the space.2 of 673
ROA: none202.45.189.128/26No ROA covers it. Add a ROA for AS4641, maxLength 26.2 of 673
Route object: none202.45.189.128/26No route object for it. A route object for 202.45.189.0/24 with origin AS4641 covers it (too long for filters allowing more-specifics up to /24). Add a route object with origin AS4641 in the RIR database for the space.2 of 673
ROA: none202.45.189.241/32No ROA covers it. Add a ROA for AS4641, maxLength 32.2 of 673
Route object: none202.45.189.241/32No route object for it. A route object for 202.45.189.0/24 with origin AS4641 covers it (too long for filters allowing more-specifics up to /24). Add a route object with origin AS4641 in the RIR database for the space.2 of 673
ROA: none202.45.189.242/32No ROA covers it. Add a ROA for AS4641, maxLength 32.2 of 673
Route object: none202.45.189.242/32No route object for it. A route object for 202.45.189.0/24 with origin AS4641 covers it (too long for filters allowing more-specifics up to /24). Add a route object with origin AS4641 in the RIR database for the space.2 of 673
ROA: none202.45.189.248/29No ROA covers it. Add a ROA for AS4641, maxLength 29.2 of 673
Route object: none202.45.189.248/29No route object for it. A route object for 202.45.189.0/24 with origin AS4641 covers it (too long for filters allowing more-specifics up to /24). Add a route object with origin AS4641 in the RIR database for the space.2 of 673
ROA: none202.45.190.0/25No ROA covers it. Add a ROA for AS4641, maxLength 25.2 of 673
Route object: none202.45.190.0/25No route object for it. A route object for 202.45.190.0/24 with origin AS4641 covers it (too long for filters allowing more-specifics up to /24). Add a route object with origin AS4641 in the RIR database for the space.2 of 673
ROA: none202.45.190.160/27No ROA covers it. Add a ROA for AS4641, maxLength 27.2 of 673
Route object: none202.45.190.160/27No route object for it. A route object for 202.45.190.0/24 with origin AS4641 covers it (too long for filters allowing more-specifics up to /24). Add a route object with origin AS4641 in the RIR database for the space.2 of 673
ROA: none2405:3001:0:bc:193::/120No ROA covers it. Add a ROA for AS4641, maxLength 120.2 of 636
Route object: none2405:3001:0:bc:193::/120No route object for it. A route object for 2405:3001::/32 with origin AS4641 covers it (too long for filters allowing more-specifics up to /48). Add a route object with origin AS4641 in the RIR database for the space.2 of 636
ROA: none2405:3001:0:bc:1b7::/119No ROA covers it. Add a ROA for AS4641, maxLength 119.2 of 636
Route object: none2405:3001:0:bc:1b7::/119No route object for it. A route object for 2405:3001::/32 with origin AS4641 covers it (too long for filters allowing more-specifics up to /48). Add a route object with origin AS4641 in the RIR database for the space.2 of 636
ROA: none2405:3001:1:1a9::/124No ROA covers it. Add a ROA for AS4641, maxLength 124.2 of 636
Route object: none2405:3001:1:1a9::/124No route object for it. A route object for 2405:3001::/32 with origin AS4641 covers it (too long for filters allowing more-specifics up to /48). Add a route object with origin AS4641 in the RIR database for the space.2 of 636
ROA: none2405:3001:1:1e9::/120No ROA covers it. Add a ROA for AS4641, maxLength 120.2 of 636
Route object: none2405:3001:1:1e9::/120No route object for it. A route object for 2405:3001::/32 with origin AS4641 covers it (too long for filters allowing more-specifics up to /48). Add a route object with origin AS4641 in the RIR database for the space.2 of 636
ROA: none2405:3001:1:1ea::6/128No ROA covers it. Add a ROA for AS4641, maxLength 128.2 of 636
Route object: none2405:3001:1:1ea::6/128No route object for it. A route object for 2405:3001::/32 with origin AS4641 covers it (too long for filters allowing more-specifics up to /48). Add a route object with origin AS4641 in the RIR database for the space.2 of 636
ROA: none2405:3001:1:1ef::1/128No ROA covers it. Add a ROA for AS4641, maxLength 128.2 of 636
Route object: none2405:3001:1:1ef::1/128No route object for it. A route object for 2405:3001::/32 with origin AS4641 covers it (too long for filters allowing more-specifics up to /48). Add a route object with origin AS4641 in the RIR database for the space.2 of 636
ROA: none2405:3001:1:1f4::/64No ROA covers it. Add a ROA for AS4641, maxLength 64.2 of 636
Route object: none2405:3001:1:1f4::/64No route object for it. A route object for 2405:3001::/32 with origin AS4641 covers it (too long for filters allowing more-specifics up to /48). Add a route object with origin AS4641 in the RIR database for the space.2 of 636
ROA: none2405:3001:1:3a::/64No ROA covers it. Add a ROA for AS4641, maxLength 64.2 of 636
Route object: RIR2405:3001:1:3a::/64Route object only in RADB. Add it in the RIR database for the space.2 of 636
ROA: none123.255.96.0/19No ROA covers it. Add a ROA for AS4641, maxLength 19.672 of 673
ROA: none202.45.177.0/24No ROA covers it. Add a ROA for AS4641, maxLength 24.671 of 673
ROA: none202.45.176.0/20No ROA covers it. Add a ROA for AS4641, maxLength 20.668 of 673
ROA: none2405:3001::/32No ROA covers it. Add a ROA for AS4641, maxLength 32.636 of 636
Route object: none202.45.191.0/24No route object for it. A route object for 202.45.176.0/20 with origin AS4641 covers it (filters allowing more-specifics accept it). Add a route object with origin AS4641 in the RIR database for the space.2 of 673
AS-SET: missing memberAPNIC::AS4641:AS-CUHK-TRANSITAS4641:AS-CUHK-TRANSIT (APNIC) lists AS-PCH; no IRR database read has it.

Route objects not announced

Route objects with origin AS4641 whose prefix no peer sees AS4641 announce. Many are kept on purpose (backup routes, space announced only in some places).

137.189.0.0/16NTTCOMNo ROA
137.189.196.0/24NTTCOMNo ROA
202.40.216.0/24NTTCOMNo ROA
202.45.188.0/24RADBNo ROA
202.45.189.0/24RADBNo ROA
202.45.190.0/24RADBNo ROA
203.119.24.0/21NTTCOMNo ROA
203.119.32.0/22NTTCOMNo ROA
203.188.64.0/20NTTCOMNo ROA
2001:dc7:fffe::/48NTTCOMNo ROA
2001:dc7:ffff::/48NTTCOMNo ROA
2405:3000::/32NTTCOMNo ROA

Routes: the 08:00 UTC snapshots of 2026-11-12 from 75 RIPE RIS and RouteViews collectors. RPKI: our rpki-client run before the snapshot. IRR: the day's dumps of the five RIR databases and RADB's mirrors. The LEVEL3 and IDNIC databases publish no dump and aren't read, so route objects only there count as none.