asn.dev

Autonomous system

AS23713 ISC-SEL1 - Internet Systems Consortium, Inc.

Unclassified APNIC

IPv4 addresses 256 1 prefixes
IPv6 prefixes 0 counted as prefixes, not addresses
Countries 1 mostly KR
Exchanges 0 recorded by PCH
Upstreams 1 0 downstream
Flagged prefixes 0 none

Summary

Internet Systems Consortium

Korea, Republic of · AI-generated

business infrastructure dns

ISC-SEL1 is operated by Internet Systems Consortium, Inc.

What it's used for

  • The address space is registered to the Internet Systems Consortium, with the netname ISC-AP1 and registrant Internet Systems Consortium NOC.
  • The AS announces a single IPv4 prefix, 202.41.145.0/24, comprising 256 addresses, and maintains one observed neighbour, indicating a small, self-contained network footprint.

Notable

  • The RDAP registrants align with the AS holder, listing Internet Systems Consortium NOC and Internet Systems Consortium.
  • The address inventory consists of a single /24 block, which is finely subdivided for internal use rather than broad distribution.

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

Full topology · Graph

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 1 adjacent networks observed; most-used upstreams first.

ASNetworkPaths seen
AS401534GATEL NETWORK SOLUTION LLC64

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-11-05, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.

Address space

Summary

Shape and geography

IPv4 1 prefixes · 256 addresses IPv6 0 prefixes

CountryNamePrefixes
KRKorea, Republic of1

Registry

Allocation record

APNIC · via Atlas (registry + RDAP)
Registry
APNIC
Handle
AS23713
Registry name
ISC-SEL1
Registrant
Internet Systems Consortium
Abuse contact
abuse@isc.org
Registered
2008-09-04
Last changed
2020-07-29
Allocation
allocated

Declared

PeeringDB profile

self-reported
Name
ISC F-ROOT SEL1
Scope
Not Disclosed
Traffic ratio
Not Disclosed
Peering policy
Open
IRR as-set
AS-FROOT
Website
https://www.isc.org/

PeeringDB records are maintained by the network operator and are not independently verified. Treat them as a statement of intent rather than of fact. For the observed and recorded view, see peering, which lists the exchanges Packet Clearing House has a port on file for.

Routing security

RPKI and IRR

Full detail
RPKI
100% valid · 1 valid, 0 with no ROA
ROAs
1 authorising AS23713
ASPA
no ASPA record
IRR
100% registered · 1 of 1 announcements
Route objects
2 naming AS23713

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: 453 networks and 1,854 prefixes, as published 2026-11-06. 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

Cross-check