AS9255 — CONNECTPLUS-AS - Singapore Telecom

AS9255 announces 32 IPv4 prefixes covering 21,248 addresses and 43 IPv6 prefixes.

About this network

AS9255 (CONNECTPLUS-AS) is registered to Singapore Telecommunications (Singtel) and carries the name of ConnectPlus, Singtel's managed IP-VPN and enterprise connectivity product line. It sits inside the Singtel group alongside the carrier's other autonomous systems and takes its routes through them.

What it's used for

The evidence points two ways, and both are worth stating. RIS sees 38 IPv4 prefixes carrying 25,088 addresses, 50 IPv6 prefixes, and 41 observed neighbours.

The IPv6 side reads as enterprise service: 50-odd prefixes, almost all individual /48s out of 2001:c20::, which is the classic shape of per-customer assignments handed to sites on a managed VPN. The long tail of the IPv4 table says the same thing — single /24s pulled from unrelated ranges (194.124.188.0/24, 158.155.250.0/24, 157.234.216.0/24, 103.102.235.0/24), the kind of scattered small blocks that accumulate when a carrier routes address space on behalf of business customers.

But the largest blocks tell a different story. The 151.192.0.0 /21s and the 118.201.16.0/20 resolve under singnet.com.sg with broadband-style templated names (bb151-192-16-5.singnet.com.sg). SingNet is Singtel's consumer ISP brand. So the same AS is announcing space that carries SingNet's broadband naming convention alongside what look like enterprise customer routes. The honest reading is that this is a Singtel-group AS whose inventory is mixed, and that the ConnectPlus name describes the product it was created for rather than the whole of what it now carries.

Notable

• Singtel operates several autonomous systems; AS9255 takes transit from the group's own networks rather than standing alone.
• Do not read the SingNet PTRs as making this the consumer eyeball AS, and do not read the ConnectPlus handle as making it purely enterprise. The routing table contains both.

This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy.

Announced prefixes

• 103.102.235.0/24
• 118.201.12.0/22
• 118.201.81.0/24
• 122.200.28.0/24
• 128.106.8.0/23
• 128.106.84.0/22
• 128.106.156.0/23
• 138.103.32.0/22
• 143.223.80.0/23
• 144.46.124.0/23
• 151.192.0.0/19
• 151.192.32.0/21
• 151.192.48.0/24
• 157.234.216.0/24
• 158.155.250.0/24
• 180.255.29.0/24
• 185.82.163.0/24
• 194.124.188.0/24
• 203.125.128.0/24
• 203.126.8.0/24
• 203.126.130.0/24
• 203.126.133.0/24
• 203.126.134.0/24
• 203.126.147.0/24
• 203.127.3.0/24
• 203.127.10.0/24
• 203.127.31.0/24
• 203.127.104.0/24
• 203.127.181.0/24
• 203.127.201.0/24
• 203.127.202.0/24
• 206.221.40.0/24
• 2001:c20:4849::/48
• 2001:c20:485e::/47
• 2001:c20:486c::/48
• 2001:c20:4871::/48
• 2001:c20:4874::/48
• 2001:c20:487e::/48
• 2001:c20:4884::/48
• 2001:c20:4887::/48
• 2001:c20:488c::/47
• 2001:c20:488f::/48
• 2001:c20:4892::/48
• 2001:c20:4894::/47
• 2001:c20:489a::/48
• 2001:c20:48a0::/48
• 2001:c20:48a6::/48
• 2001:c20:48ae::/47
• 2001:c20:48b0::/48
• 2001:c20:48b8::/48
• 2001:c20:48c2::/48
• 2001:c20:48c4::/48
• 2001:c20:48c6::/48
• 2001:c20:48cc::/48
• 2001:c20:48da::/47
• 2001:c20:48dc::/48
• 2001:c20:48e6::/47
• 2001:c20:48e9::/48
• 2001:c20:48ea::/48
• 2001:c20:48f0::/48
• 2001:c20:c816::/48
• 2001:c20:c819::/48
• 2001:c20:c81a::/48
• 2001:c20:c81d::/48
• 2001:c20:c81e::/47
• 2001:c20:c824::/46
• 2001:c20:c831::/48
• 2001:c20:c835::/48
• 2001:c20:c839::/48
• 2001:c20:c83f::/48
• 2001:c20:c844::/48
• 2001:c20:c847::/48
• 2001:c20:c84e::/48
• 2001:c20:c856::/48
• 2001:df0:30f::/48

Upstream networks

• AS3758 SingNet

Downstream networks

• AS12222 Akamai Technologies, Inc.
• AS18402 NATIONAL LIBRARY BOARD
• AS203651 Credit Agricole Corporate and Investment Bank SA
• AS58562 5 Ang Mo Kio Street 62
• AS137003 INSEAD
• AS205080 Societe Internationale de Telecommunications Aeronautiques
• AS400696 MIBURA, INC.
• AS212581 SGX FX SYSTEMS UK LIMITED
• AS3573 Accenture LLP
• AS139895 Air Liquide Industrial Services Pte Ltd
• AS133456 ALAGAS NETWORK PTE. LTD.
• AS26685 Franklin Resources
• AS31747 BlackRock Financial Management, Inc.
• AS140939 Tenpage Pte Ltd
• AS133728 Chubb Asia Pacific Pte Ltd
• AS133422 Aviva Asia Pte Ltd
• AS19661 Susquehanna International Group, LLP
• AS18723 Seagate Technology LLC
• AS139617 ISEAS Yusof Ishak Institute
• AS55426 Amphenol FCI Asia Pte Ltd
• AS142250 Oversea-Chinese Banking Corporation Limited
• AS134407 MediaCorp Pte Ltd
• AS151334 Land Transport Authority
• AS138458 NEC ASIA PACIFIC PTE LTD
• AS16477 Nielsen Consumer LLC

Adjacent networks

• AS3758 SingNet
• AS12222 Akamai Technologies, Inc.
• AS18402 NATIONAL LIBRARY BOARD
• AS203651 Credit Agricole Corporate and Investment Bank SA
• AS58562 5 Ang Mo Kio Street 62
• AS137003 INSEAD
• AS205080 Societe Internationale de Telecommunications Aeronautiques
• AS400696 MIBURA, INC.
• AS212581 SGX FX SYSTEMS UK LIMITED
• AS3573 Accenture LLP
• AS139895 Air Liquide Industrial Services Pte Ltd
• AS26685 Franklin Resources
• AS31747 BlackRock Financial Management, Inc.
• AS18723 Seagate Technology LLC
• AS133422 Aviva Asia Pte Ltd
• AS133456 ALAGAS NETWORK PTE. LTD.
• AS133728 Chubb Asia Pacific Pte Ltd
• AS19661 Susquehanna International Group, LLP
• AS140939 Tenpage Pte Ltd
• AS139617 ISEAS Yusof Ishak Institute
• AS55426 Amphenol FCI Asia Pte Ltd
• AS142250 Oversea-Chinese Banking Corporation Limited
• AS134407 MediaCorp Pte Ltd
• AS151334 Land Transport Authority
• AS138458 NEC ASIA PACIFIC PTE LTD

Routing security

• RPKI: 73 valid, 7 invalid and 13 not-found announcements; 145 ROAs.
• ASPA: none published.
• IRR: 81% of announcements registered; 148 route objects.
• Listed in as-sets: AS-ANC-CUSTOMER-PROXY-REGISTER, AS-BTN-CUSTOMERS, AS-HURRICANEV6, AS-PACNET-CUSTOMER-PROXY-REGISTER, AS-RETN-ACTUAL-V4, AS-RETN-ACTUAL-V6, AS-SH-CUST, AS-SINGNET, AS-TELSTRA-INTL-CUSTOMERS-4637, AS13335:AS-CUSTOMERS, AS3491:AS-CUSTOMERS-AP, AS4628:AS-CUSTOMERS, AS7473:AS-CUSTOMERS:AS3758.