asn.dev

Autonomous system

AS53657 -Reserved AS-

Unclassified ARIN

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

Summary

Navilyst Medical, Inc

unknown · AI-generated

business medical spectrum

The AS handle is -Reserved AS- and the holder is Navilyst Medical, Inc.

What it's used for

  • The space carries business traffic, evidenced by the registrant NAVILYST MEDICAL, INC and reverse DNS entries like syn-024-213-247-064.biz.spectrum.com.
  • The network announces 256 IPv4 addresses across 1 prefix with 1 observed neighbour, indicating a small, dedicated business connection rather than a transit or large access network.
  • Traffic from this AS consists of web and API endpoints for a medical device company, utilizing Spectrum business internet services.

Notable

  • The registrant NAVILYST MEDICAL, INC aligns with the business nature of the reverse DNS records.
  • The address inventory consists of a single /24 block, which is a standard allocation for a small corporate site.

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
AS11351Charter Communications Inc62

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-23, 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
Unknown1

Registry

Allocation record

ARIN · via Atlas (registry data)
Registry
ARIN
Allocation
reserved

Routing security

RPKI and IRR

Full detail
RPKI
100% valid · 1 valid, 0 with no ROA
ROAs
1 authorising AS53657
ASPA
no ASPA record
IRR
100% registered · 1 of 1 announcements
Route objects
1 naming AS53657

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 1,779 prefixes, as published 2026-10-24. 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