
18943 YELCOT, US
Adjacency: 10 Upstream: 4 Downstream: 6
Upstream Adjacent AS list
AS7029 WINDSTREAM, US
AS22773 ASN-CXA-ALL-CCI-22773-RDC, US
AS3356 LEVEL3, US
AS7018 ATT-INTERNET4, US
Downstream Adjacent AS list
AS14770 REYNOLDSMEDIA-01, US
AS20030 MCCLI-ARTELCO, US
AS35894 NATCONET-1, US
AS400446 CITIZENSBANK, US
AS63481 BCRH, US
AS399476 BETHESDA, US
Rank AS Type Originate Addr Space (pfx) Transit Addr space (pfx) Description 8721 AS18943 ORG+TRN Originate: 13568 /18.27 Transit: 1024 /22.00 YELCOT, US
Aggregation Suggestions
Filter: Aggregates, Specifics
This report does not take into account conditions local to each origin AS in terms of policy or traffic engineering requirements, so this is an approximate guideline as to aggregation possibilities.
Rank AS AS Name Current Wthdw Aggte Annce Redctn % 4066 AS18943 YELCOT, US 38 20 7 25 13 34.21% Prefix AS Path Aggregation Suggestion 63.75.31.0/24 6939 3356 18943 18943 18943 67.209.40.0/24 6939 3356 18943 18943 18943 67.209.41.0/24 7018 18943 18943 18943 18943 67.209.42.0/24 7018 18943 18943 18943 18943 67.209.43.0/24 6939 3356 18943 18943 18943 167.100.120.0/24 6939 3356 18943 18943 18943 167.100.121.0/24 7018 18943 18943 18943 18943 167.100.122.0/23 7018 18943 18943 18943 18943 + Announce - aggregate of 167.100.122.0/24 (7018 18943 18943 18943 18943) and 167.100.123.0/24 (7018 18943 18943 18943 18943) 167.100.122.0/24 7018 18943 18943 18943 18943 - Withdrawn - aggregated with 167.100.123.0/24 (7018 18943 18943 18943 18943) 167.100.123.0/24 7018 18943 18943 18943 18943 - Withdrawn - aggregated with 167.100.122.0/24 (7018 18943 18943 18943 18943) 167.100.124.0/22 6939 3356 18943 18943 18943 + Announce - aggregate of 167.100.124.0/23 (6939 3356 18943 18943 18943) and 167.100.126.0/23 (6939 3356 18943 18943 18943) 167.100.124.0/24 6939 3356 18943 18943 18943 - Withdrawn - aggregated with 167.100.125.0/24 (6939 3356 18943 18943 18943) 167.100.125.0/24 6939 3356 18943 18943 18943 - Withdrawn - aggregated with 167.100.124.0/24 (6939 3356 18943 18943 18943) 167.100.126.0/24 6939 3356 18943 18943 18943 - Withdrawn - aggregated with 167.100.127.0/24 (6939 3356 18943 18943 18943) 167.100.127.0/24 6939 3356 18943 18943 18943 - Withdrawn - aggregated with 167.100.126.0/24 (6939 3356 18943 18943 18943) 207.66.96.0/23 6939 3356 18943 18943 18943 + Announce - aggregate of 207.66.96.0/24 (6939 3356 18943 18943 18943) and 207.66.97.0/24 (6939 3356 18943 18943 18943) 207.66.96.0/24 6939 3356 18943 18943 18943 - Withdrawn - aggregated with 207.66.97.0/24 (6939 3356 18943 18943 18943) 207.66.97.0/24 6939 3356 18943 18943 18943 - Withdrawn - aggregated with 207.66.96.0/24 (6939 3356 18943 18943 18943) 207.66.98.0/23 7018 18943 18943 18943 18943 + Announce - aggregate of 207.66.98.0/24 (7018 18943 18943 18943 18943) and 207.66.99.0/24 (7018 18943 18943 18943 18943) 207.66.98.0/24 7018 18943 18943 18943 18943 - Withdrawn - aggregated with 207.66.99.0/24 (7018 18943 18943 18943 18943) 207.66.99.0/24 7018 18943 18943 18943 18943 - Withdrawn - aggregated with 207.66.98.0/24 (7018 18943 18943 18943 18943) 207.66.100.0/24 6939 3356 18943 18943 18943 207.66.101.0/24 7018 18943 18943 18943 18943 207.66.102.0/24 6939 3356 18943 18943 18943 207.66.103.0/24 7018 18943 18943 18943 18943 216.134.224.0/22 6939 3356 18943 18943 18943 + Announce - aggregate of 216.134.224.0/23 (6939 3356 18943 18943 18943) and 216.134.226.0/23 (6939 3356 18943 18943 18943) 216.134.224.0/24 6939 3356 18943 18943 18943 - Withdrawn - aggregated with 216.134.225.0/24 (6939 3356 18943 18943 18943) 216.134.225.0/24 6939 3356 18943 18943 18943 - Withdrawn - aggregated with 216.134.224.0/24 (6939 3356 18943 18943 18943) 216.134.226.0/24 6939 3356 18943 18943 18943 - Withdrawn - aggregated with 216.134.227.0/24 (6939 3356 18943 18943 18943) 216.134.227.0/24 6939 3356 18943 18943 18943 - Withdrawn - aggregated with 216.134.226.0/24 (6939 3356 18943 18943 18943) 216.134.228.0/24 6939 3356 18943 18943 18943 216.134.229.0/24 7018 18943 18943 18943 18943 216.134.230.0/24 6939 3356 18943 18943 18943 216.134.231.0/24 7018 18943 18943 18943 18943 216.134.232.0/21 7018 18943 18943 18943 18943 + Announce - aggregate of 216.134.232.0/22 (7018 18943 18943 18943 18943) and 216.134.236.0/22 (7018 18943 18943 18943 18943) 216.134.232.0/23 7018 18943 18943 18943 18943 - Withdrawn - aggregated with 216.134.234.0/23 (7018 18943 18943 18943 18943) 216.134.234.0/24 7018 18943 18943 18943 18943 - Withdrawn - aggregated with 216.134.235.0/24 (7018 18943 18943 18943 18943) 216.134.235.0/24 7018 18943 18943 18943 18943 - Withdrawn - aggregated with 216.134.234.0/24 (7018 18943 18943 18943 18943) 216.134.236.0/22 7018 18943 18943 18943 18943 - Withdrawn - aggregated with 216.134.232.0/22 (7018 18943 18943 18943 18943) 216.134.240.0/22 6939 3356 18943 18943 18943 216.134.244.0/23 7018 18943 18943 18943 18943 216.134.246.0/23 6939 3356 18943 18943 18943 + Announce - aggregate of 216.134.246.0/24 (6939 3356 18943 18943 18943) and 216.134.247.0/24 (6939 3356 18943 18943 18943) 216.134.246.0/24 6939 3356 18943 18943 18943 - Withdrawn - aggregated with 216.134.247.0/24 (6939 3356 18943 18943 18943) 216.134.247.0/24 6939 3356 18943 18943 18943 - Withdrawn - aggregated with 216.134.246.0/24 (6939 3356 18943 18943 18943) 216.134.248.0/21 7018 18943 18943 18943 18943
Advertisements that are fragments of the original RIR allocation (more specifics) originated by this AS.
AS18943 34 More Specifics 34 Total Advertisements YELCOT, US
63.67.6.0/24 63.64.0.0/10
63.75.31.0/24 63.64.0.0/10
167.100.120.0/24 167.100.120.0/21
167.100.121.0/24 167.100.120.0/21
167.100.122.0/24 167.100.120.0/21
167.100.123.0/24 167.100.120.0/21
167.100.124.0/24 167.100.120.0/21
167.100.125.0/24 167.100.120.0/21
167.100.126.0/24 167.100.120.0/21
167.100.127.0/24 167.100.120.0/21
207.66.96.0/24 207.66.96.0/21
207.66.97.0/24 207.66.96.0/21
207.66.98.0/24 207.66.96.0/21
207.66.99.0/24 207.66.96.0/21
207.66.100.0/24 207.66.96.0/21
207.66.101.0/24 207.66.96.0/21
207.66.102.0/24 207.66.96.0/21
207.66.103.0/24 207.66.96.0/21
216.134.224.0/24 216.134.224.0/19
216.134.225.0/24 216.134.224.0/19
216.134.226.0/24 216.134.224.0/19
216.134.227.0/24 216.134.224.0/19
216.134.228.0/24 216.134.224.0/19
216.134.229.0/24 216.134.224.0/19
216.134.230.0/24 216.134.224.0/19
216.134.231.0/24 216.134.224.0/19
216.134.232.0/23 216.134.224.0/19
216.134.234.0/24 216.134.224.0/19
216.134.236.0/22 216.134.224.0/19
216.134.240.0/22 216.134.224.0/19
216.134.244.0/23 216.134.224.0/19
216.134.246.0/24 216.134.224.0/19
216.134.247.0/24 216.134.224.0/19
216.134.248.0/21 216.134.224.0/19
67.209.40.0/24 67.209.40.0/21
216.134.235.0/24 216.134.224.0/19
Prefixes added and withdrawn by this origin AS in the past 7 days.
+ 63.67.6.0/24 Announced
- 67.209.40.0/24 Withdrawn
- 216.134.235.0/24 Withdrawn
whois: 402551
IANA has recorded AS18943 as originally allocated by
/usr/bin/whois -h jwhois.apnic.netr "AS18943\n
#
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# Copyright 1997-2026, American Registry for Internet Numbers, Ltd.
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ASNumber: 18943
ASName: YELCOT
ASHandle: AS18943
RegDate: 2000-10-31
Updated: 2025-02-04
Ref: https://rdap.arin.net/registry/autnum/18943
OrgName: YELCOT TELEPHONE COMPANY
OrgId: YELCOT
Address: P.O. BOX 1970
City: MOUNTAIN HOME
StateProv: AR
PostalCode: 72654
Country: US
RegDate: 1998-04-29
Updated: 2025-02-04
Ref: https://rdap.arin.net/registry/entity/YELCOT
OrgTechHandle: BUEGA-ARIN
OrgTechName: Bueg, Aaron
OrgTechPhone: +1-870-435-1302
OrgTechEmail: aaron.bueg@yelcot.com
OrgTechRef: https://rdap.arin.net/registry/entity/BUEGA-ARIN
OrgAbuseHandle: BUEGA-ARIN
OrgAbuseName: Bueg, Aaron
OrgAbusePhone: +1-870-435-1302
OrgAbuseEmail: aaron.bueg@yelcot.com
OrgAbuseRef: https://rdap.arin.net/registry/entity/BUEGA-ARIN
RNOCHandle: BUEGA-ARIN
RNOCName: Bueg, Aaron
RNOCPhone: +1-870-435-1302
RNOCEmail: aaron.bueg@yelcot.com
RNOCRef: https://rdap.arin.net/registry/entity/BUEGA-ARIN
RTechHandle: BUEGA-ARIN
RTechName: Bueg, Aaron
RTechPhone: +1-870-435-1302
RTechEmail: aaron.bueg@yelcot.com
RTechRef: https://rdap.arin.net/registry/entity/BUEGA-ARIN
RAbuseHandle: BUEGA-ARIN
RAbuseName: Bueg, Aaron
RAbusePhone: +1-870-435-1302
RAbuseEmail: aaron.bueg@yelcot.com
RAbuseRef: https://rdap.arin.net/registry/entity/BUEGA-ARIN
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# available at: https://www.arin.net/resources/registry/whois/tou/
#
# If you see inaccuracies in the results, please report at
# https://www.arin.net/resources/registry/whois/inaccuracy_reporting/
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# Copyright 1997-2026, American Registry for Internet Numbers, Ltd.
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