Autonomous system
AS10109 TOPNET-AS-MN-AP Topica LLC, Internet Service Provider,Ulaanbaatar, Mongolia
Unclassified APNIC
Summary
Topica LLC (TopNET)
TOPNET-AS-MN-AP is Topica LLC, a small internet service provider in Ulaanbaatar, Mongolia. Founded in 2005 by a group of electronics and IT engineers, it trades as TopNET and sells corporate internet access and data-centre services to Mongolian businesses.
What it's used for
Serving business customers in and around the Mongolian capital. The AS announces 8 IPv4 prefixes totalling 2,048 addresses — the eight contiguous /24s of 119.40.96.0/21, deaggregated one by one rather than announced as a single block — plus one IPv6 /32. Announcing a /21 as eight /24s is ordinary practice for a small provider that wants each block to survive independently and to keep options open for multi-homing later.
Notable
The routing shape says end-site provider, not carrier. Around 2,000 addresses against 2 observed BGP neighbours places this firmly at the edge of the network: it buys transit from a small number of upstreams and resells to end customers, whereas a wholesale operator would be seen with hundreds of neighbours. The size is telling in the other direction too. A national eyeball ISP with a mass-market broadband product would need far more than 2,048 addresses even behind carrier NAT, so this is best read as a corporate and SME provider rather than a consumer one.
Interesting
An IPv6 /32 alongside only a /21 of IPv4 is a common shape for small APNIC members: v6 is allocated generously by policy, so even tiny providers hold a v6 block that dwarfs their entire v4 estate.
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, 1 downstream and 4 adjacent networks observed; most-used upstreams first.
| AS | Network | Paths seen |
|---|---|---|
| AS45204 | GEMNET LLC | 496 |
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-18, 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 |
|---|---|---|
| MN | Mongolia | 2 |
Registry
Allocation record
- Registry
- APNIC
- Handle
AS10109- Registry name
- TOPNET-AS-MN-AP
- Registrant
- Topica Co.,Ltd
- Abuse contact
- info@topnet.mn
- Registered
- 2008-09-04
- Last changed
- 2020-06-09
- Allocation
- allocated
Routing security
RPKI and IRR
- RPKI
- 100% valid · 9 valid, 0 with no ROA
- ROAs
- 10 authorising AS10109
- ASPA
- no ASPA record
- IRR
- 100% registered · 9 of 9 announcements
- Route objects
- 20 naming AS10109
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: 442 networks and 1,784 prefixes, as published 2026-10-19. 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