Autonomous system
AS17421 EMOME-NET Mobile Business Group
Unclassified ARIN
Summary
Chunghwa Telecom Mobile
mobile telecom taiwan mobile
The AS handle EMOME-NET is operated by CHT-Mobile Business Group, the mobile division of Chunghwa Telecom.
What it's used for
- The address space carries mobile subscriber traffic, evidenced by reverse DNS records pointing to
emome-ip.hinet.net(e.g.,42-74-0-0.emome-ip.hinet.net). - The AS announces 1,655,808 IPv4 addresses across 61 prefixes and 43 IPv6 prefixes, while maintaining only 1 observed neighbour, a ratio characteristic of a large access network rather than a transit provider.
Notable
- Registrants for the largest prefixes consistently list
CHT-Mobile Business GroupandIRT-HINET-AP, aligning with the AS holder identity. - The address inventory is dominated by large blocks such as
42.72.0.0/13and111.80.0.0/14, with finer subdivisions in the116.59.0.0and221.120.0.0ranges.
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
No exchange port on file. Many exchanges publish no participant list, so this is not proof of absence.
Transit providers
1 upstream, 0 downstream and 2 adjacent networks observed; most-used upstreams first.
| AS | Network | Paths seen |
|---|---|---|
| AS3462 | Data Communication Business Group | 12,448 |
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 61 prefixes · 1.66M addresses IPv6 43 prefixes
| Country | Name | Prefixes |
|---|---|---|
| TW | Taiwan, Province of China | 104 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS17421- Registry name
- EMOME-NET
- Abuse contact
- network-adm@hinet.net
- Registered
- 2008-09-04
- Last changed
- 2025-11-06
- Allocation
- allocated
Routing security
RPKI and IRR
- RPKI
- 100% valid · 225 valid, 0 with no ROA
- ROAs
- 11 authorising AS17421
- ASPA
- no ASPA record
- IRR
- 79% registered · 177 of 225 announcements
- Route objects
- 8 naming AS17421
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: 432 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
1 IC3 indicators addresses in this network appear in FBI IC3 cybersecurity advisories.
| Prefix | Advisory | Published |
|---|---|---|
42.73.98.232 | Chinese Government-linked Cyber Threat Actors Combine Automated and Hands-on Hacking Tools to Steal Sensitive Data | 2026-10-08 |
IC3 threat data is alpha. Absence of an indicator is not evidence of good behaviour, only of absence from this one feed.
Elsewhere