Autonomous system
AS55111 CALVERT-COUNTY
Unclassified ARIN
Summary
Calvert County
government county maryland
CALVERT-COUNTY is operated by Calvert County, a local government entity in Maryland.
What it's used for
- The address space is registered under the netname
NETWORKMARYLANDwith the registrant listed as the State of Maryland. - The AS announces a single IPv4 prefix,
167.102.218.0/23, comprising 512 addresses, with no IPv6 prefixes in inventory. - With only one observed neighbour, this AS functions as a small, isolated network for county government operations rather than a transit or large-scale access provider.
Notable
- The RDAP registrant identifies the State of Maryland, which aligns with the AS holder being a county government within that state.
- The inventory consists of a single contiguous /23 block, indicating a compact and self-contained address allocation for internal use.
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
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.
| AS | Network | Paths seen |
|---|---|---|
| AS27026 | networkMaryland | 60 |
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-28, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 1 prefixes · 512 addresses IPv6 0 prefixes
| Country | Name | Prefixes |
|---|---|---|
| US | United States of America | 1 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS55111- Registry name
- CALVERT-COUNTY
- Registrant
- Calvert County
- Abuse contact
- lippertr@calvertnet.k12.md.us
- Registered
- 2013-03-07
- Last changed
- 2013-03-07
- Allocation
- assigned
Routing security
RPKI and IRR
- RPKI
- 0% valid · 0 valid, 1 with no ROA
- ROAs
- 0 authorising AS55111
- ASPA
- no ASPA record
- IRR
- 100% registered · 1 of 1 announcements
- Route objects
- 1 naming AS55111
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: 448 networks and 1,851 prefixes, as published 2026-10-29. 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