asn.dev

Autonomous system

AS18183 NCREE National Center for Research on Earthquake Engineering

Unclassified APNIC

IPv4 addresses 5.63K 7 prefixes
IPv6 prefixes 9 counted as prefixes, not addresses
Countries 1 mostly TW
Exchanges 0 recorded by PCH
Upstreams 4 1 downstream
Flagged prefixes 0 none

Summary

National Center for Research on Earthquake Engineering

Taiwan, Province of China · AI-generated

research government earthquake taiwan

NCREE is operated by the National Center for Research on Earthquake Engineering.

What it's used for

  • The address space carries research and government infrastructure, evidenced by reverse DNS entries such as eqceoc.ncdr.nat.gov.tw and uavimage.ncdr.nat.gov.tw, alongside internal hostnames like hp440g6-16.ncree.org.
  • With 5632 IPv4 addresses and 9 IPv6 prefixes announced against only 5 observed neighbours, the network functions as a dedicated institutional endpoint rather than a transit provider.

Notable

  • Registrants for the largest prefixes are listed as unknown, though netnames GSN-NET and NCREE-NET align with the operator's identity and associated networks.
  • The inventory is finely subdivided into seven IPv4 prefixes, including a large block at 61.56.8.0/21 and smaller segments like 61.56.4.0/24, reflecting internal site or functional segmentation.

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

Full topology · Graph

Internet exchanges

No exchange port on file. Many exchanges publish no participant list, so this is not proof of absence.

Transit providers

4 upstream, 1 downstream and 6 adjacent networks observed; most-used upstreams first.

ASNetworkPaths seen
AS9264Academia Sinica211
AS7539National Center for High-performance Computing184
AS9681Formosa Open eXchange(FOX)51
AS9505Taiwan Internet Gateway43

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

Shape and geography

IPv4 7 prefixes · 5.63K addresses IPv6 9 prefixes

CountryNamePrefixes
TWTaiwan, Province of China16

Registry

Allocation record

APNIC · via Atlas (registry + RDAP)
Registry
APNIC
Handle
AS18183
Registry name
NCREE
Abuse contact
wccheng@narlabs.org.tw
Registered
2008-09-04
Last changed
2026-01-08
Allocation
allocated

Routing security

RPKI and IRR

Full detail
RPKI
100% valid · 10 valid, 0 with no ROA
ROAs
5 authorising AS18183
ASPA
no ASPA record
IRR
100% registered · 10 of 10 announcements
Route objects
14 naming AS18183

Reputation

Classification and threat

Unclassified Not in the curated lists. Most of the ~80,000 allocated ASNs are not.

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

Cross-check