Autonomous system
AS23836 RELNET RELATION Co., Ltd.
Residential APNIC
Summary
RELNET
isp residential japan cable
RELNET is operated by RELATION Co., Ltd.
What it's used for
- The address space carries residential and access traffic, indicated by the PeeringDB classification as a Cable/DSL/ISP and the netname
RELATION-CIDR-BLK-JP. - The AS announces 4096 IPv4 addresses across 2 prefixes and 1 IPv6 prefix, with 5 observed neighbours; this ratio suggests an access or eyeball network rather than a transit provider.
Notable
- Registrants for both IPv4 prefixes are listed as Japan Network Information Center; IRT-JPNIC-JP, which is the regional registry rather than the end-user, consistent with standard JPNIC allocation practices.
- The inventory consists of two /21 blocks in the 202.142.8.0 and 203.99.224.0 ranges, plus a /32 IPv6 prefix, representing a modest footprint typical of a regional ISP.
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 |
|---|---|---|
| JPIX Osaka | Osaka, Japan | 103.246.232.54 |
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 2 prefixes · 4.10K addresses IPv6 1 prefixes
| Country | Name | Prefixes |
|---|---|---|
| JP | Japan | 3 |
Registry
Allocation record
- Registry
- APNIC
- Handle
AS23836- Registry name
- RELNET
- Abuse contact
- hostmaster@nic.ad.jp
- Registered
- 2003-06-16
- Last changed
- 2011-12-08
- Allocation
- allocated
Routing security
RPKI and IRR
- RPKI
- 100% valid · 3 valid, 0 with no ROA
- ROAs
- 3 authorising AS23836
- ASPA
- no ASPA record
- IRR
- 100% registered · 3 of 3 announcements
- Route objects
- 3 naming AS23836
Reputation
Classification and threat
Residential Fixed-line consumer ISP. Addresses here are homes.
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