Autonomous system
AS9877 NGEEANN-POLY-AS-AP Ngee Ann Polytechnic Computer Center
Education APNIC
Summary
Ngee Ann Polytechnic
education university legacy
AS9877 (NGEEANN-POLY-AS-AP) is held by the Ngee Ann Polytechnic Computer Centre. Ngee Ann is one of Singapore's five polytechnics, a large post-secondary institution on Clementi Road offering diploma programmes to tens of thousands of students and alumni.
What it's used for
This is a single-campus institutional network. RIS sees just 5 IPv4 prefixes carrying 65,536 addresses and no IPv6, with only 2 observed BGP neighbours. Almost all of that address count is one object: 153.20.0.0/16, a legacy class-B block registered to the polytechnic as NPNET-SG, announced alongside four more-specific /24s carved out of it (153.20.24.0/24, 153.20.78.0/24, 153.20.93.0/24, 153.20.117.0/24). Announcing more-specifics of your own aggregate is normally done to steer traffic for particular subnets across different upstreams, or to protect them from hijack; with two neighbours, the former is the likely motive. Two neighbours also confirms the role — the polytechnic buys connectivity, it does not sell any, and its AS exists so it can multi-home rather than to provide transit to anyone else.
Notable
- A full /16 for one campus is a striking amount of address space by modern standards. It is an artifact of the era in which it was allocated, not of current need — an institution applying today would receive a small fraction of it.
- The AS is registered to the institution's Computer Centre specifically, which is the campus IT department; the network fronts university-owned lab, staff and student-facing systems rather than any commercial hosting.
This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy. Source, and how to suggest an edit.
Interconnection
Peering at a glance
Internet exchanges
Recorded at 1 exchange in 1 country, largest first.
| Exchange | Location | Their address |
|---|---|---|
| Singapore Open Exchange | Singapore, Singapore | 198.32.141.149 |
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-11, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 16 prefixes · 65.54K addresses IPv6 0 prefixes
| Country | Name | Prefixes |
|---|---|---|
| SG | Singapore | 16 |
Registry
Allocation record
- Registry
- APNIC
- Handle
AS9877- Registry name
- NGEEANN-POLY-AS-AP
- Registrant
- SingNet Pte Ltd
- Abuse contact
- hostmaster@singnet.com.sg
- Registered
- 2008-09-04
- Last changed
- 2020-05-16
- Allocation
- allocated
Routing security
RPKI and IRR
- RPKI
- 0% valid · 0 valid, 4 with no ROA
- ROAs
- 0 authorising AS9877
- ASPA
- no ASPA record
- IRR
- 100% registered · 4 of 4 announcements
- Route objects
- 10 naming AS9877
Reputation
Classification and threat
Education University, school or national research and education network.
Spamhaus DROP
Not on ASN-DROP The network as a whole is not listed.
No DROP prefixes None of its announced space is on the DROP prefix list.
Spamhaus DROP ("Don't Route Or Peer") lists space and networks run by, or hijacked for, spam and cybercrime operations: 431 networks and 1,768 prefixes, as published 2026-10-12. A short, high-confidence list, so a match is worth taking seriously, and absence from it says little on its own.
FBI IC3
No IC3 indicators Nothing from the FBI IC3 feed.
IC3 threat data is alpha. Absence of an indicator is not evidence of good behaviour, only of absence from this one feed.
Elsewhere