Autonomous system
AS23785 SUNFIELD SUN FIELD INTERNET LIMITED
Unclassified RIPE
Summary
Sun Field Internet Limited
isp residential japan access
SUNFIELD is operated by Sun Field Internet Limited.
What it's used for
- The address space carries residential or small-business access traffic, indicated by reverse DNS entries such as
115-167-128-000.sunfield.ne.jpand202-213-39-255.sunfield.ne.jp. - The AS announces 45,056 IPv4 addresses across 3 prefixes while maintaining only 2 observed neighbours, a ratio characteristic of an access network rather than a transit provider.
Notable
- Registrants for all announced prefixes are listed as Japan Network Information Center (JPNIC), which is consistent with the AS holder being a Japanese ISP.
- The address inventory consists of three distinct IPv4 blocks: 115.167.128.0/17, 115.166.224.0/19, and 202.213.32.0/20, with no IPv6 prefixes announced.
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.
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 3 prefixes · 45.06K addresses IPv6 0 prefixes
| Country | Name | Prefixes |
|---|---|---|
| JP | Japan | 3 |
Registry
Allocation record
- Registry
- RIPE
- Handle
AS23785- Registry name
- SUNFIELD
- Abuse contact
- hostmaster@nic.ad.jp
- Registered
- 2003-06-16
- Last changed
- 2003-10-03
- Allocation
- allocated
Routing security
RPKI and IRR
- RPKI
- 0% valid · 0 valid, 3 with no ROA
- ROAs
- 0 authorising AS23785
- ASPA
- no ASPA record
- IRR
- 100% registered · 3 of 3 announcements
- Route objects
- 3 naming AS23785
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