Hyper-Specific Prefixes: Gotta Enjoy the Little Things in Interdomain Routing
The work
| Authors | Khwaja Zubair Sediqi; Lars Prehn; Oliver Gasser |
|---|---|
| Editors | |
| Type | article |
| Year | 2022 |
| Citekey | sediqi2022hyperspecific |
Where it appeared
| Published in | ACM SIGCOMM Computer Communication Review |
|---|---|
| Publisher | Association for Computing Machinery (ACM) |
| Volume | 52 |
| Issue | 2 |
| Pages | 20--34 |
Identifiers
| DOI | 10.1145/3544912.3544916 |
|---|---|
| ISSN | 0146-4833 |
Access
| Landing page | https://doi.org/10.1145/3544912.3544916 |
|---|
From crossref.
Abstract
Autonomous Systems (ASes) exchange reachability information between each other using BGP---the de-facto standard inter-AS routing protocol. While IPv4 (IPv6) routes more specific than /24 (/48) are commonly filtered (and hence not propagated), route collectors still observe many of them. In this work, we take a closer look at those "hyper-specific" prefixes (HSPs). In particular, we analyze their prevalence, use cases, and whether operators use them intentionally or accidentally. While their total number increases over time, most HSPs can only be seen by route collector peers. Nonetheless, some HSPs can be seen constantly throughout an entire year and propagate widely. We find that most HSPs represent (internal) routes to peering infrastructure or are related to address block relocations or blackholing. While hundreds of operators intentionally add HSPs to well-known routing databases, we observe that many HSPs are possibly accidentally leaked routes.
How it got here
| How it got here | agent via crossref |
|---|---|
| Added | 2026-10-28 02:44 UTC |
| Not denied by | a person 2026-10-29 17:12 UTC |
Filed under
Cite it as
@article{sediqi2022hyperspecific,
title = {Hyper-Specific Prefixes: Gotta Enjoy the Little Things in Interdomain Routing},
author = {Khwaja Zubair Sediqi and Lars Prehn and Oliver Gasser},
year = {2022},
journal = {ACM SIGCOMM Computer Communication Review},
publisher = {Association for Computing Machinery (ACM)},
volume = {52},
number = {2},
pages = {20--34},
issn = {0146-4833},
doi = {10.1145/3544912.3544916},
}
This record lives at https://refs.drheap.org/sediqi2022hyperspecific/ and will keep doing so.