AS19858 GENSLER - M. Arthur Gensler Jr. & Associates, Inc.
🇺🇸ARINassigned
Announced Prefixes (BGP)
2total
2 IPv40 IPv6
IPv4 Addresses
Allocated (RIR)66,048
Announced (BGP)512
IPv6 Addresses
Allocated (RIR)0
Announced (BGP)0
Announced Prefixes
(BGP)2|
Prefix | RPKI | IRR | Last Seen |
|---|---|---|---|
| Valid | ARIN | 2026-10-11 | |
| Valid | ARIN | 2026-10-11 |
Allocated Prefixes
(RIR)2Prefix | Country | RIR | Status |
|---|---|---|---|
| 64.239.72.0/23 | 🇺🇸 US | ARIN | allocated |
| 138.208.0.0/16 | 🇺🇸 US | ARIN | allocated |
All 2 announced prefixes of AS19858 →
BGP Neighbours
(seen in AS paths)Upstreams (1)
Networks AS19858 hands its own prefixes to: transit providers, or peers at an exchange.
- AS174Cogent Communications2
ASPA
No ASPA
External Links
Learn more
- What is an ASN?Autonomous systems, ASN ranges and how they are assigned
- RPKI and route origin validationWhat the RPKI badges on the prefix list mean
- ASPA explainedWhy AS19858 should publish an ASPA object
- IPv4 transfers in the ARIN regionMonthly volume and the latest registry transfers
- ASN data in AI agents and SIEMMCP server and API integrations
API
Open https://api.ipctl.io/v1/asn/19858Returns ASN details, announced prefixes, and BGP routing data.
curl -s "https://api.ipctl.io/v1/asn/19858" | jq