Autonomous system
AS36001 BERTRAM-COMMUNICATIONS-LLC
Residential ARIN Cable/DSL/ISP
Interconnection
Peering at a glance
Internet exchanges
Recorded at 2 exchanges in 1 country, largest first.
| Exchange | Location | Their address |
|---|---|---|
| Equinix Internet Exchange Chicago | Chicago, United States | 208.115.136.1 |
| United IX Chicago | Chicago, United States | 206.41.110.88 |
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-27, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 14 prefixes · 34.56K addresses IPv6 4 prefixes
| Country | Name | Prefixes |
|---|---|---|
| US | United States of America | 18 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS36001- Registry name
- BERTRAM-COMMUNICATIONS-LLC
- Registrant
- Bertram Communications LLC
- Abuse contact
- dmca@bertramcommunications.com
- Registered
- 2005-07-21
- Last changed
- 2018-07-06
- Allocation
- assigned
Declared
PeeringDB profile
- Name
- Bertram Communications
- Also known as
- Bertram Internet, XL Broadband, Bertram Fiber, Door County Broadband
- Network type
- Cable/DSL/ISP
- Scope
- Regional
- Traffic ratio
- Heavy Inbound
- Peering policy
- Open
- IRR as-set
AS-BERTRAMWIRELESS- Present at
- 1 exchanges
- Facilities
- 1 facilities
- Website
- https://bertramcommunications.com/
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
- 100% valid · 15 valid, 0 with no ROA
- ROAs
- 15 authorising AS36001
- ASPA
- no ASPA record
- IRR
- 100% registered · 15 of 15 announcements
- Route objects
- 30 naming AS36001
Reputation
Classification and threat
Residential Fixed-line consumer ISP. Addresses here are homes.
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 1,852 prefixes, as published 2026-10-27. 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