Autonomous system
AS15107 Grupo Financiero Bancomer
Unclassified AFRINIC
Summary
Grupo Financiero Bancomer
finance business enterprise
Eighteen prefixes carved out of one range, every one labelled with the range instead of itself.
What it's used for
- A banking group's network. Eighteen IPv4 prefixes announced from Mexico, no IPv6, and six observed BGP neighbours.
Notable
- All eighteen prefixes fall inside
148.244, split into pieces from a/20down to individual/24blocks. - Every resolved block carries the same netname, and that netname is not a name at all: it is the first and last address of the parent range written out and joined with a hyphen.
- The registrant is the bank under a shorter trading name than the holder record uses, with its corporate form missing its final punctuation.
- Six of eighteen sampled addresses answered, all in the form
static-148-244-11-254.alestra.net.mx, under a carrier's domain rather than the bank's. - The AS handle is the full company name with spaces in it, which most holders in this range replace with a short code.
Interesting
- Splitting one range into eighteen announcements is real routing work, and the registry records none of it. Each piece points back at the whole, so the registry cannot say which part of the bank holds which addresses, only that the bank holds all of them.
- Address-range netnames turn up on unrelated holders elsewhere in this corpus. They are what a registry produces when nobody supplies a name, and they read as data rather than as a label.
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
6 upstream, 0 downstream and 6 adjacent networks observed; most-used upstreams first.
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-13, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 18 prefixes · 16.38K addresses IPv6 0 prefixes
| Country | Name | Prefixes |
|---|---|---|
| MX | Mexico | 18 |
Registry
Allocation record
- Registry
- AFRINIC
- Handle
AS15107- Registry name
- 15107
- Registrant
- Grupo Financiero Bancomer
- Abuse contact
- mespinosa@gfb.com.mx
- Registered
- 2000-03-22
- Last changed
- 2011-06-11
- Allocation
- allocated
Routing security
RPKI and IRR
- RPKI
- 100% valid · 21 valid, 0 with no ROA
- ROAs
- 1 authorising AS15107
- ASPA
- no ASPA record
- IRR
- 100% registered · 21 of 21 announcements
- Route objects
- 13 naming AS15107
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: 436 networks and 1,771 prefixes, as published 2026-10-13. 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