AS26297 Howard County, Maryland

United States AS-HOCO-MAIN ARIN 5 IPv4 prefixes 0 IPv6 prefixes

IPv4 addresses

4,352

IPv6 /48 networks

RPKI

0 valid5 no ROA

Peers and downstreams

Holder

AS name: AS-HOCO-MAIN
Description: HOWARD COUNTY 3430 COURT HOUSE DR Ellicott City MD 21043 United States
Organisation: Howard County, Maryland
Abuse contact: Not published
Assigned: 2014-01-29
Registered: 2014-01-30
Record last changed: 2025-10-27 16:52 UTC

165.140.212.0/22 167.102.188.0/22 167.102.191.0/24 167.102.248.0/21 198.51.121.0/24

Upstream graph

Upstreams and their upstreams, from BGP paths

Network health

Grade D · 50/100

fail	Prefixes covered by valid ROAs 0 of 5 announced prefixes are RPKI valid, 5 have no ROA.	0/25
pass	No RPKI invalid announcements None of the announcements is RPKI invalid.	10/10
fail	Announces IPv6 No IPv6 prefixes are announced.	0/15
pass	More than one upstream 2 upstreams seen in BGP.	10/10
pass	Working abuse contact abuse-bb@howardcountymd.gov is published.	15/15
fail	Publishes a geofeed No geofeed found. Without one, location databases have to guess.	0/10
pass	No prefixes smaller than /24 or /48 All prefixes are /24 (IPv4) or /48 (IPv6) or larger.	10/10
pass	Registry record maintained Last changed 2025-10-27.	5/5

Built from the announced prefixes, RPKI, the registry record and geofeeds. Checks without data are not counted. Also in the API.

Show this on your website

HTML

<a href="https://ip-fd.net/asn/26297"><img src="https://ip-fd.net/badge/asn/26297/health.svg" alt="AS26297 network health on IP-FD.net"></a>

Markdown

[![AS26297 network health](https://ip-fd.net/badge/asn/26297/health.svg)](https://ip-fd.net/asn/26297)

Use rpki.svg instead of health.svg for the RPKI badge.

Routing changes

Last 30 days

2026-10-04 15:44 UTC

Relationship changed

AS6461

upstream to peer

WHOIS

aut-num:        AS26297
as-name:        HCGOV
handle:         AS26297
registrant:     HCM-55 (Howard County, Maryland)
abuse:          BROAD130-ARIN (Broadband Abuse) <abuse-bb@howardcountymd.gov>
routing,technical,noc,dns,administrative:BROAD129-ARIN (Broadband Operations) <bb-ops@howardcountymd.gov>
technical:      BROAD127-ARIN (Broadband Administrator) <lgmanning@howardcountymd.gov>
technical:      MPE236-ARIN (Matthew Phillip English) <menglish@howardcountymd.gov>
technical:      MILLE3209-ARIN (Nathan Miller) <nmiller@howardcountymd.gov>
technical:      FORDM16-ARIN (Mark Ford) <mford@howardcountymd.gov>
last changed:   2025-10-27T12:52:50-04:00
registration:   2014-01-30T11:04:47-05:00
source:         ARIN (RDAP)

Routing data

Updated just now

Registry record

Fetched just now from ARIN RDAP

Prefixes and neighbours come from the RIPE RIS route collectors. Data older than 5 minutes is refreshed when this page is opened.

API

curl -H "X-API-Key: YOUR_KEY" https://ip-fd.net/api/v1/asn/26297

const res = await fetch('https://ip-fd.net/api/v1/asn/26297', {
  headers: { 'X-API-Key': 'YOUR_KEY' }
});
const data = await res.json();
console.log(data);

import requests

r = requests.get('https://ip-fd.net/api/v1/asn/26297', headers={'X-API-Key': 'YOUR_KEY'}, timeout=10)
r.raise_for_status()
print(r.json())

<?php
$ch = curl_init('https://ip-fd.net/api/v1/asn/26297');
curl_setopt($ch, CURLOPT_HTTPHEADER, ['X-API-Key: YOUR_KEY']);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
$data = json_decode(curl_exec($ch), true);
print_r($data);

req, _ := http.NewRequest("GET", "https://ip-fd.net/api/v1/asn/26297", nil)
req.Header.Set("X-API-Key", "YOUR_KEY")
res, err := http.DefaultClient.Do(req)
if err != nil {
    log.Fatal(err)
}
defer res.Body.Close()
body, _ := io.ReadAll(res.Body)
fmt.Println(string(body))

Works without a key at a lower rate. Get a free key.

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