Autonomous system
AS7610 NUS-GP-AS-AP NUS Gigapop
Education APNIC
Summary
NUS Gigapop (National University of Singapore)
education research legacy
NUS-GP-AS-AP is the NUS Gigapop, the high-speed exchange and external-connectivity point run by the National University of Singapore's IT department. A "gigapop" is a regional aggregation point for research-and-education traffic.
What it's used for
- External peering and transit for NUS and for Singapore's research-and-education community. The ASN announces a single IPv4 block,
202.51.240.0/21, plus2402:400::/32. - Reverse DNS is institutional and router-heavy: names such as
nus-gw2.gigapop.nus.edu.sgmark the border gateways. There is nothing resembling a subscriber pool anywhere in the space.
Notable
- This is a research-network exchange, not a campus access network. The addresses front peering routers and a small number of shared services rather than student or staff machines, so the address count is far smaller than a university of NUS's size would suggest.
- NUS Gigapop appears at several Singapore colocation facilities and internet exchanges, which is the shape you expect of an R&E interconnect: many peers, little end-user space.
Interesting
- The gigapop model came out of the US Internet2 era, where a handful of regional aggregation points fed the national research backbone. Singapore's version pairs with SingAREN, the national advanced research and education network, whose early work was published out of NUS.
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 3 exchanges in 2 countries, largest first.
| Exchange | Location | Their address |
|---|---|---|
| Hong Kong Internet Exchange | Hong Kong, China | 123.255.91.236 |
| Singapore Internet Exchange | Singapore, Singapore | 103.16.102.57 |
| Singapore Open Exchange | Singapore, Singapore | 198.32.141.11 |
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-20, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 1 prefixes · 2.05K addresses IPv6 1 prefixes
| Country | Name | Prefixes |
|---|---|---|
| SG | Singapore | 2 |
Registry
Allocation record
- Registry
- APNIC
- Handle
AS7610- Registry name
- NUS-GP-AS-AP
- Registrant
- National University of Singapore
- Abuse contact
- abuse@nus.edu.sg
- Registered
- 2008-09-04
- Last changed
- 2021-01-08
- Allocation
- allocated
Routing security
RPKI and IRR
- RPKI
- 0% valid · 0 valid, 2 with no ROA
- ROAs
- 0 authorising AS7610
- ASPA
- no ASPA record
- IRR
- 50% registered · 1 of 2 announcements
- Route objects
- 3 naming AS7610
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: 442 networks and 1,778 prefixes, as published 2026-10-20. 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