AS23855 Singapore Advanced Research and Education Network 🇸🇬 SG

SingAREN. Announcing 3 prefixes, seen at the RIS collectors.

IPv4 prefixes

512 (2 × /24)

IPv6 prefixes

1 × /48

Upstreams

transit providers observed

Peers

settlement-free adjacencies

Downstreams

transit customers observed

Customer cone

39,303

ASes reachable through it

Registry and operator data

AS number: AS23855
Name: Singapore Advanced Research and Education Network
Organisation: SingAREN Open Exchange 1 (GSW)
Country: 🇸🇬 SG
RIR: APNIC
Allocated: 2005-08-24
Network type: Educational/Research
Traffic levels: 10-20Gbps
Scope: Asia Pacific
Peering policy: Open
IRR as-set: AS23855:AS-LOCAL-INSTITUTION
Website: https://www.singaren.net.sg
PeeringDB: net/23014
Exchanges: 3
Facilities: 1

RPKI coverage of this AS

Its own announcements, validated against the current ROA set

3 valid (100.0%) 0 invalid (0.0%) 0 no ROA (0.0%)

Upstreams

Networks seen providing transit to this one

Network	Country	Cone	IPv4 prefixes	Paths	Source
AS4637 Telstra International Limited	🇭🇰 HK	45,479	669	106	CAIDA

Peers

Adjacencies that look settlement-free rather than transit

Network	Country	Cone	IPv4 prefixes	Paths	Source
AS6939 Hurricane Electric LLC	🇺🇸 US	57,327	241	216	CAIDA
AS35280 F5 Networks SARL	🇫🇷 FR	41,574	60	2	CAIDA
AS24482 SG.GS	🇸🇬 SG	38,405	45	13	CAIDA
AS37989 DCS1	🇸🇬 SG	38,375	2	4	CAIDA
AS7575 Australian Academic and Research Network (AARNet)	🇦🇺 AU	587	201	1	CAIDA
AS17639 Converge ICT Solutions Inc.	🇵🇭 PH	242	575	3	CAIDA
AS4538 China Education and Research Network Center	🇨🇳 CN	84	5,168	1	CAIDA
AS1103 SURF B.V.	🇳🇱 NL	30	99	44	CAIDA
AS38001 NewMedia Express Pte. Ltd.	🇸🇬 SG	27	68	4	CAIDA
AS9821 Department of Science and Technology	🇵🇭 PH	17	3	2	CAIDA
AS9270 National Infomation Society Agency	🇰🇷 KR	8	23	133	CAIDA
AS38229 Lanka Education & Research Network, NREN	🇱🇰 LK	3	26	2,950	CAIDA
AS136968 SingAREN	🇸🇬 SG	0	1	108	CAIDA

Downstreams

Networks this one appears to provide transit to

Network	Country	Cone	IPv4 prefixes	Paths	Source
AS7660 Asia Pacific Advanced Network - Japan	🇯🇵 JP	39,862	2	1,525	inferred
AS24490 Trans-Eurasia Information Network (TEIN2) - SG	🇨🇳 CN	39,287	1	131	CAIDA
AS9885 NKN INTERNET GATEWAY NETWORK	🇮🇳 IN	82	0	189	CAIDA
AS134148 SingAREN	🇸🇬 SG	44	2	95	CAIDA
AS293 ESnet	🇺🇸 US	35	27	196	CAIDA
AS9264 Academia Sinica	🇹🇼 TW	12	6	11	CAIDA
AS7497 Computer Network Information Center of Chinese Academy of Sciences (CNIC-CAS)	🇨🇳 CN	9	470	647	CAIDA
AS137207 Joint Universities Computer Centre Limited	🇭🇰 HK	8	1	117	CAIDA
AS23767 Agency for Science, Technology, And Research	🇸🇬 SG	0	29	214	CAIDA
AS9419 Nanyang Technological University	🇸🇬 SG	0	4	65	CAIDA
AS23864 Singapre Advance Research and Education Network - National Grid Office - IHPC	🇸🇬 SG	0	1	39	CAIDA
AS132398 Science and Engineering Institutes	🇸🇬 SG	0	1	29	CAIDA
AS131475 Singapore Institute of Technology	🇸🇬 SG	0	2	16	CAIDA
AS50999 King Abdullah University of Science and Technology	🇸🇦 SA	0	5	4	inferred
AS206350 Oman Research and education Network (OMREN)	🇴🇲 OM	0	3	4	CAIDA
AS45259 Bruhaas (B) Sdn Bhd	🇧🇳 BN	0	2	1	CAIDA

Relationships marked inferred come from where the two networks sit on the AS paths the collectors see, which is a guess and is wrong for some of them. The rest are stated by CAIDA's published inference over a much wider set of collectors.