Autonomous system
AS4713 OCN NTT Communications Corporation
Residential APNIC
Summary
NTT OCN (Japan)
isp eyeball
OCN (OCN NTT Communications) — NTT's large consumer/business ISP in Japan, one of the country's most widely used fixed-broadband providers.
What it's used for
- Fixed broadband internet access for millions of Japanese homes and businesses.
Notable
- A domestic "eyeball" network — distinct from AS2914, which is NTT's global IP-transit backbone. OCN is the retail ISP; 2914 is the international carrier.
Interesting
- OCN rides on NTT's FLET'S fibre access infrastructure, the backbone of Japan's high fibre-broadband penetration.
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 |
|---|---|---|
| Network Service Provider IXP (Distributed IX in Edo) | Tokyo, Japan | 202.249.2.111 |
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 165 prefixes · 28.62M addresses IPv6 21 prefixes
| Country | Name | Prefixes |
|---|---|---|
| JP | Japan | 186 |
Registry
Allocation record
- Registry
- APNIC
- Handle
AS4713- Registry name
- OCN
- Registered
- 1995-08-30
- Last changed
- 2025-10-20
- Allocation
- allocated
Routing security
RPKI and IRR
- RPKI
- 41% valid · 76 valid, 111 with no ROA
- ROAs
- 78 authorising AS4713
- ASPA
- no ASPA record
- IRR
- 100% registered · 187 of 187 announcements
- Route objects
- 414 naming AS4713
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: 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