asn.dev

Autonomous system

AS53676 EMERALD

Unclassified ARIN

IPv4 addresses 1.02K 1 prefixes
IPv6 prefixes 0 counted as prefixes, not addresses
Countries 1 mostly US
Exchanges 0 recorded by PCH
Upstreams 1 0 downstream
Flagged prefixes 0 none

Summary

Emerald Publications

United States of America · AI-generated

business biotech small

EMERALD is the autonomous system for Emerald Publications.

What it's used for

  • The space carries a single IPv4 prefix, 199.59.136.0/22, with the netname EMERALD and registrant Emerald Publications.
  • The inventory consists of 1024 IPv4 addresses across 1 prefix, with 0 IPv6 prefixes announced.
  • With only 1 observed neighbour, the routing footprint is minimal, consistent with a small internal corporate estate rather than a transit or access provider.
  • As a biotechnology company based in San Diego, California, the traffic from this AS represents internal corporate network activity for office workers and research staff.

Notable

  • The RDAP registrant Emerald Publications matches the AS holder and netname, confirming consistent ownership.
  • The address inventory is a single contiguous /22 block, typical for a small business or 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
AS6130American Internet Services, LLC.128

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-26, 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 · 1.02K addresses IPv6 0 prefixes

CountryNamePrefixes
USUnited States of America1

Registry

Allocation record

ARIN · via Atlas (registry + RDAP)
Registry
ARIN
Handle
AS53676
Registry name
EMERALD
Registrant
Emerald Publications
Abuse contact
email_feedbackloops@emeraldtools.com
Registered
2010-11-22
Last changed
2020-04-07
Allocation
assigned

Routing security

RPKI and IRR

Full detail
RPKI
0% valid · 0 valid, 2 with no ROA
ROAs
0 authorising AS53676
ASPA
no ASPA record
IRR
100% registered · 2 of 2 announcements
Route objects
3 naming AS53676

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: 445 networks and 1,817 prefixes, as published 2026-10-27. 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