asn.dev

Autonomous system

AS23219 MICROCERV

Unclassified ARIN

IPv4 addresses 1.79K 3 prefixes
IPv6 prefixes 0 counted as prefixes, not addresses
Countries 1 mostly US
Exchanges 0 recorded by PCH
Upstreams 2 0 downstream
Flagged prefixes 0 none

Summary

MicroCerv

United States of America · AI-generated

business small us

MICROCERV is the autonomous system handle for MicroCerv.

What it's used for

  • The address space carries business infrastructure, indicated by the reverse DNS record ftp.wc-grp.com and netnames UU-63-78-244 and UU-65-220-15.
  • The AS announces 1792 IPv4 addresses across 3 prefixes with only 2 observed neighbours, a ratio that implies a small-scale access or business network rather than a transit provider.

Notable

  • Registrants are mixed: MicroCerv holds the 63.78.244.0/22 and 65.220.15.0/24 blocks, while Verizon Business is the registrant for the 65.220.16.0/23 block with netname UUNET65.
  • The inventory consists of three distinct IPv4 prefixes totaling 1792 addresses, 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

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

2 upstream, 0 downstream and 2 adjacent networks observed; most-used upstreams first.

ASNetworkPaths seen
AS701Verizon Business168
AS6203Peace Communications LLC6

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-22, 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 3 prefixes · 1.79K addresses IPv6 0 prefixes

CountryNamePrefixes
USUnited States of America3

Registry

Allocation record

ARIN · via Atlas (registry + RDAP)
Registry
ARIN
Handle
AS23219
Registry name
MICROCERV
Registrant
MicroCerv
Abuse contact
hostmaster@microcerv.com
Registered
2002-02-08
Last changed
2012-03-20
Allocation
assigned

Routing security

RPKI and IRR

Full detail
RPKI
0% valid · 0 valid, 3 with no ROA
ROAs
0 authorising AS23219
ASPA
no ASPA record
IRR
0% registered · 0 of 3 announcements
Route objects
0 naming AS23219

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 2026-10-23. 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