Autonomous system
AS11821 SMARTBURST - SmartBurst LLC
Unclassified ARIN
Summary
SmartBurst LLC
isp legacy
SMARTBURST is SmartBurst LLC, a small independent internet provider in Aubrey, Texas (Denton County, north of Dallas). It sells unlimited residential and small-business broadband delivered over a fibre-fed, ground-based fixed-wireless network — a WISP, in other words, rather than a cable or telco incumbent.
What it's used for
- Retail access for homes and businesses in its Denton County service area. The commercial footprint is documented in the usual broadband-availability sources and in PeeringDB, where the company lists itself; the routing is the small end of an access network.
- RIS sees 3 IPv4 prefixes / 1,536 addresses, no IPv6, and 1 observed neighbour. A single upstream is the tell that matters: this network buys transit from one provider and has no peering role at all. Under two thousand addresses is a few thousand subscribers at most, behind carrier NAT or not.
Notable
- All three prefixes —
158.51.184.0/22,148.59.150.0/24and205.201.54.0/24— are ARIN-registered under the handleSMARTBURSTto SmartBurst LLC. Holder, registrant and announcer are the same entity throughout; there is no third-party or out-of-region space anywhere in the inventory, so none of the leased-address-space patterns apply. - No reverse DNS was seen on the six addresses sampled. That is a sample, not a finding — it supports no conclusion about the zone in either direction, and none is drawn here.
Interesting
- This is a clear case of a low AS number meaning nothing about age. ARIN records AS11821 as registered in August 2017, and the ASN's contact is a named individual at a PO box in Aubrey. A four-figure AS number in the 11000s is reissued space, and the company holding it is a recent one.
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 |
|---|---|---|
| AS19754 | The Fusion Network, LLC | 177 |
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-11-13, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 3 prefixes · 1.54K addresses IPv6 0 prefixes
| Country | Name | Prefixes |
|---|---|---|
| US | United States of America | 3 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS11821- Registry name
- SMARTBURST
- Registrant
- SmartBurst LLC
- Abuse contact
- abuse@smartburst.com
- Registered
- 2017-08-03
- Last changed
- 2017-08-03
- Allocation
- assigned
Routing security
RPKI and IRR
- RPKI
- 100% valid · 3 valid, 0 with no ROA
- ROAs
- 4 authorising AS11821
- ASPA
- no ASPA record
- IRR
- 100% registered · 3 of 3 announcements
- Route objects
- 7 naming AS11821
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: 455 networks and 1,849 prefixes, as published 2026-11-13. 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