Autonomous system
AS11255 SBT-NET - Screamin' Banshee Technologies
Unclassified ARIN
Summary
Screamin' Banshee Technologies
isp legacy
SBT-NET belongs to Screamin' Banshee Technologies, a very small independent internet company in Waterloo, Iowa, registered to an office suite at 501 Sycamore Street and trading on the domain sbt.net. The memorable name is the whole company: this is a four-person local operator, not a national provider.
What it's used for
The routing is that of a tiny single-homed provider. RIS observes 12 IPv4 prefixes carrying 3,072 addresses, no IPv6, and one observed neighbour. A single neighbour means the network buys transit from exactly one upstream and sells transit to nobody. The address count is twelve /24s worth of space, an amount a small-town ISP or a modest hosting and business-IT shop consumes, and nothing more.
Most of the inventory is the company's own: 63.147.97.0/24 through 63.147.103.0/24 are all carved out of a single ARIN /21 registered under the handle 63-147-96-0-21 to Screamin' Banshee itself, announced deaggregated as individual /24s. 204.71.100.0/24 sits under a legacy Savvis handle whose org is SBT, Inc. — the same company under its short name. Two blocks, 206.156.242.0/24 and 206.27.220.0/24, are registered to CenturyLink. That is ordinary provider-assigned carrier space from the upstream, not third-party leased-in inventory, and it does not fit the multi-RIR, multi-registrant scatter that signals IP brokerage.
Notable
ARIN registered the ASN in June 1998 and the org record was last touched in 2012. This is one of the genuinely old numbers in a range full of recycled ones: the holder today is the same company it was issued to.
Interesting
What the space actually carries is not determinable from the routing alone. The pack returned no reverse DNS on the addresses sampled, so there is no PTR evidence to say whether these /24s front consumer access, business connectivity or hosted servers, and the card does not guess.
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 |
|---|---|---|
| AS209 | CenturyLink Communications, LLC | 732 |
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-31, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 7 prefixes · 3.07K addresses IPv6 0 prefixes
| Country | Name | Prefixes |
|---|---|---|
| US | United States of America | 7 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS11255- Registry name
- SBT-NET
- Registrant
- Screamin' Banshee Technologies
- Abuse contact
- jim@sbt.net
- Registered
- 1998-06-01
- Last changed
- 2012-03-02
- Allocation
- assigned
Declared
PeeringDB profile
- Name
- Screamin' Banshee Technologies
- Scope
- Not Disclosed
- Traffic ratio
- Not Disclosed
- Peering policy
- Open
- IRR as-set
AS11255:AS-ALL
PeeringDB records are maintained by the network operator and are not independently verified. Treat them as a statement of intent rather than of fact. For the observed and recorded view, see peering, which lists the exchanges Packet Clearing House has a port on file for.
Routing security
RPKI and IRR
- RPKI
- 8% valid · 1 valid, 11 with no ROA
- ROAs
- 8 authorising AS11255
- ASPA
- no ASPA record
- IRR
- 100% registered · 12 of 12 announcements
- Route objects
- 57 naming AS11255
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: 447 networks and 1,843 prefixes, as published 2026-11-01. 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