[REN-BGP-stats-all] IPv4 R&E Routing Table Report - ASREN (R&E) view
REN Routing Table Report
cscora at bgp.nsrc.org
Wed Jan 22 17:05:40 UTC 2025
IPv4 R&E Routing Table Report 17:05 GMT Wed 22 Jan, 2025
IPv4 BGP Table (R&E) as seen at ASREN.
Report Website: https://bgp.nsrc.org/REN
Detailed Analysis: https://bgp.nsrc.org/REN/ASREN/
Analysis Summary
----------------
BGP routing table entries examined: 14920
Prefixes after maximum aggregation (per Origin AS): 8475
Deaggregation factor: 1.76
Unique aggregates announced (without unneeded subnets): 9285
Number of IPv4 prefixes with a valid ROA: 5889
Number of IPv4 prefixes with an invalid ROA: 1
Number of IPv4 prefixes with no ROA: 9030
Total ASes present in the Internet Routing Table: 2199
Prefixes per ASN: 6.78
Origin-only ASes present in the Internet Routing Table: 1915
Origin ASes announcing only one prefix: 893
Transit ASes present in the Internet Routing Table: 284
Transit-only ASes present in the Internet Routing Table: 35
Paths with bogon ASNs present in the IPv4 Routing Table: 0
Average AS path length visible in the Internet Routing Table: 4.7
Max AS path length visible: 17
Max AS path prepend of ASN (327947) 11
Prefixes from unregistered ASNs in the Routing Table: 0
Number of instances of unregistered ASNs: 0
Number of 32-bit ASNs allocated by the RIRs: 46044
Number of 32-bit ASNs visible in the Routing Table: 526
Prefixes from 32-bit ASNs in the Routing Table: 1355
Number of bogon 32-bit ASNs visible in the Routing Table: 0
Special use prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 2
Number of addresses announced to Internet: 171879296
Equivalent to 10 /8s, 62 /16s and 171 /24s
Percentage of available address space announced: 4.6
Percentage of allocated address space announced: 4.6
Percentage of available address space allocated: 100.0
Percentage of address space in use by end-sites: 99.6
Total number of prefixes smaller than registry allocations: 1823
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 3241
Total APNIC prefixes after maximum aggregation: 1694
APNIC Deaggregation factor: 1.91
Prefixes being announced from the APNIC address blocks: 3241
Unique aggregates announced from the APNIC address blocks: 1873
APNIC Region origin ASes present in the Internet Routing Table: 415
APNIC Prefixes per ASN: 7.81
APNIC Region origin ASes announcing only one prefix: 199
APNIC Region transit ASes present in the Internet Routing Table: 38
Average APNIC Region AS path length visible: 4.0
Max APNIC Region AS path length visible: 13
Number of APNIC region 32-bit ASNs visible in the Routing Table: 166
Number of APNIC addresses announced to Internet: 37677440
Equivalent to 2 /8s, 62 /16s and 233 /24s
APNIC AS Blocks 4608-4864, 7467-7722, 9216-10239, 17408-18431
(pre-ERX allocations) 23552-24575, 37888-38911, 45056-46079, 55296-56319,
58368-59391, 63488-64098, 64297-64395, 131072-153913
APNIC Address Blocks 1/8, 14/8, 27/8, 36/8, 39/8, 42/8, 43/8,
49/8, 58/8, 59/8, 60/8, 61/8, 101/8, 103/8,
106/8, 110/8, 111/8, 112/8, 113/8, 114/8, 115/8,
116/8, 117/8, 118/8, 119/8, 120/8, 121/8, 122/8,
123/8, 124/8, 125/8, 126/8, 133/8, 150/8, 153/8,
163/8, 171/8, 175/8, 180/8, 182/8, 183/8, 202/8,
203/8, 210/8, 211/8, 218/8, 219/8, 220/8, 221/8,
222/8, 223/8,
ARIN Region Analysis Summary
----------------------------
Prefixes being announced by ARIN Region ASes: 7043
Total ARIN prefixes after maximum aggregation: 3861
ARIN Deaggregation factor: 1.82
Prefixes being announced from the ARIN address blocks: 7057
Unique aggregates announced from the ARIN address blocks: 4293
ARIN Region origin ASes present in the Internet Routing Table: 1023
ARIN Prefixes per ASN: 6.90
ARIN Region origin ASes announcing only one prefix: 364
ARIN Region transit ASes present in the Internet Routing Table: 122
Average ARIN Region AS path length visible: 5.4
Max ARIN Region AS path length visible: 17
Number of ARIN region 32-bit ASNs visible in the Routing Table: 161
Number of ARIN addresses announced to Internet: 75307200
Equivalent to 4 /8s, 125 /16s and 24 /24s
ARIN AS Blocks 1-1876, 1902-2042, 2044-2046, 2048-2106
(pre-ERX allocations) 2138-2584, 2615-2772, 2823-2829, 2880-3153
3354-4607, 4865-5119, 5632-6655, 6912-7466
7723-8191, 10240-12287, 13312-15359, 16384-17407
18432-20479, 21504-23551, 25600-26591,
26624-27647, 29696-30719, 31744-33791
35840-36863, 39936-40959, 46080-47103
53248-55295, 62464-63487, 64198-64296, 393216-402332
ARIN Address Blocks 3/8, 4/8, 6/8, 7/8, 8/8, 9/8, 11/8,
12/8, 13/8, 15/8, 16/8, 17/8, 18/8, 19/8,
20/8, 21/8, 22/8, 23/8, 24/8, 26/8, 28/8,
29/8, 30/8, 32/8, 33/8, 34/8, 35/8, 38/8,
40/8, 44/8, 45/8, 47/8, 48/8, 50/8, 52/8,
54/8, 55/8, 56/8, 63/8, 64/8, 65/8, 66/8,
67/8, 68/8, 69/8, 70/8, 71/8, 72/8, 73/8,
74/8, 75/8, 76/8, 96/8, 97/8, 98/8, 99/8,
100/8, 104/8, 107/8, 108/8, 128/8, 129/8, 130/8,
131/8, 132/8, 134/8, 135/8, 136/8, 137/8, 138/8,
139/8, 140/8, 142/8, 143/8, 144/8, 146/8, 147/8,
148/8, 149/8, 152/8, 155/8, 156/8, 157/8, 158/8,
159/8, 160/8, 161/8, 162/8, 164/8, 165/8, 166/8,
167/8, 168/8, 169/8, 170/8, 172/8, 173/8, 174/8,
184/8, 192/8, 198/8, 199/8, 204/8, 205/8, 206/8,
207/8, 208/8, 209/8, 214/8, 215/8, 216/8,
RIPE Region Analysis Summary
----------------------------
Prefixes being announced by RIPE Region ASes: 2971
Total RIPE prefixes after maximum aggregation: 2468
RIPE Deaggregation factor: 1.20
Prefixes being announced from the RIPE address blocks: 2959
Unique aggregates announced from the RIPE address blocks: 2547
RIPE Region origin ASes present in the Internet Routing Table: 575
RIPE Prefixes per ASN: 5.15
RIPE Region origin ASes announcing only one prefix: 270
RIPE Region transit ASes present in the Internet Routing Table: 91
Average RIPE Region AS path length visible: 3.7
Max RIPE Region AS path length visible: 13
Number of RIPE region 32-bit ASNs visible in the Routing Table: 138
Number of RIPE addresses announced to Internet: 54756736
Equivalent to 3 /8s, 67 /16s and 133 /24s
RIPE AS Blocks 1877-1901, 2043, 2047, 2107-2136, 2585-2614
(pre-ERX allocations) 2773-2822, 2830-2879, 3154-3353, 5377-5631
6656-6911, 8192-9215, 12288-13311, 15360-16383
20480-21503, 24576-25599, 28672-29695
30720-31743, 33792-35839, 38912-39935
40960-45055, 47104-52223, 56320-58367
59392-61439, 61952-62463, 64396-64495
196608-216475
RIPE Address Blocks 2/8, 5/8, 25/8, 31/8, 37/8, 46/8, 51/8,
53/8, 57/8, 62/8, 77/8, 78/8, 79/8, 80/8,
81/8, 82/8, 83/8, 84/8, 85/8, 86/8, 87/8,
88/8, 89/8, 90/8, 91/8, 92/8, 93/8, 94/8,
95/8, 109/8, 141/8, 145/8, 151/8, 176/8, 178/8,
185/8, 188/8, 193/8, 194/8, 195/8, 212/8, 213/8,
217/8,
LACNIC Region Analysis Summary
------------------------------
Prefixes being announced by LACNIC Region ASes: 960
Total LACNIC prefixes after maximum aggregation: 403
LACNIC Deaggregation factor: 2.38
Prefixes being announced from the LACNIC address blocks: 957
Unique aggregates announced from the LACNIC address blocks: 501
LACNIC Region origin ASes present in the Internet Routing Table: 123
LACNIC Prefixes per ASN: 7.78
LACNIC Region origin ASes announcing only one prefix: 44
LACNIC Region transit ASes present in the Internet Routing Table: 16
Average LACNIC Region AS path length visible: 5.0
Max LACNIC Region AS path length visible: 14
Number of LACNIC region 32-bit ASNs visible in the Routing Table: 46
Number of LACNIC addresses announced to Internet: 3474880
Equivalent to 0 /8s, 53 /16s and 5 /24s
LACNIC AS Blocks 26592-26623, 27648-28671, 52224-53247,
61440-61951, 64099-64197, 262144-274844 + ERX transfers
LACNIC Address Blocks 177/8, 179/8, 181/8, 186/8, 187/8, 189/8, 190/8,
191/8, 200/8, 201/8,
AfriNIC Region Analysis Summary
-------------------------------
Prefixes being announced by AfriNIC Region ASes: 705
Total AfriNIC prefixes after maximum aggregation: 49
AfriNIC Deaggregation factor: 14.39
Prefixes being announced from the AfriNIC address blocks: 704
Unique aggregates announced from the AfriNIC address blocks: 69
AfriNIC Region origin ASes present in the Internet Routing Table: 28
AfriNIC Prefixes per ASN: 25.14
AfriNIC Region origin ASes announcing only one prefix: 16
AfriNIC Region transit ASes present in the Internet Routing Table: 7
Average AfriNIC Region AS path length visible: 4.0
Max AfriNIC Region AS path length visible: 15
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 15
Number of AfriNIC addresses announced to Internet: 660736
Equivalent to 0 /8s, 10 /16s and 21 /24s
AfriNIC AS Blocks 36864-37887, 327680-329727 & ERX transfers
AfriNIC Address Blocks 41/8, 102/8, 105/8, 154/8, 196/8, 197/8,
APNIC Region per AS prefix count summary
----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
2907 637 2202 464 SINET-AS Research Organization of Informa
7497 450 180 24 CSTNET-AS-AP Computer Network Information
58647 183 18 2 KAGAWAU-AS Kagawa University, JP
7575 172 297 115 AARNET-AS-AP Australian Academic and Rese
55824 147 19 21 NKN-CORE-NW NKN Core Network, IN
4538 137 4192 70 ERX-CERNET-BKB China Education and Resear
2697 59 4 34 ERX-ERNET-AS Education and Research Netwo
45773 48 3 5 HECPERN-AS-PK PERN AS Content Servie Prov
132524 42 9 10 TIFR-AS Tata Institute of Fundamental Res
24361 33 56 17 CNGI-NJ-IX-AS-AP CERNET2 IX at Southeast
Complete listing at https://bgp.nsrc.org/REN/ASREN/data-ASnet-APNIC
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
2152 499 507 97 CENIC-2152, US
2920 226 44 49 LACOE, US
376 201 162 150 RISQ-AS, CA
5786 198 16 1 UPRENET, PR
18558 140 18 5 NETBLK-RCOEK, US
81 128 519 34 NCREN, US
23024 99 7 17 OCDE, US
21976 88 34 14 NJEDGE-NET, US
237 82 541 48 MERIT-AS-14, US
1736 79 16 1 MU-AS, US
Complete listing at https://bgp.nsrc.org/REN/ASREN/data-ASnet-ARIN
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
680 284 1899 249 DFN Verein zur Foerderung eines Deutschen
786 186 1767 183 JANET Jisc Services Limited, GB
559 114 533 104 SWITCH Peering requests: peering at switch.c
1103 95 1487 82 SURFNET-NL SURFnet, The Netherlands, NL
2614 92 26 72 ROEDUNET, RO
137 82 677 77 ASGARR Consortium GARR, IT
1930 79 88 74 RCCN Fundacao para a Ciencia e a Tecnolog
2200 64 598 59 FR-RENATER Reseau National de telecommuni
200521 57 4 23 SEAP-AGE, ES
1653 51 150 48 SUNET SUNET Swedish University Network, E
Complete listing at https://bgp.nsrc.org/REN/ASREN/data-ASnet-RIPE
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
1916 219 178 44 Rede Nacional de Ensino e Pesquisa, BR
11340 109 25 52 Red Universitaria Nacional, CL
271640 66 4 29 UNIVERSIDADE FEDERAL DE VICOSA, BR
4270 53 16 1 Red de Interconexion Universitaria, AR
2715 46 99 35 Fundacao Carlos Chagas Filho de Amparo a
1251 37 31 26 FUNDACAO DE AMPARO A PESQUISA DO ESTADO S
20191 28 16 1 Pontificia Universidad Catolica de Chile,
21612 25 16 1 FUNDACAO INSTITUTO OSWALDO CRUZ, BR
28571 19 40 18 UNIVERSIDADE DE SAO PAULO, BR
3597 18 16 2 Fundacion InnovaT, AR
Complete listing at https://bgp.nsrc.org/REN/ASREN/data-ASnet-LACNIC
AfriNIC Region per AS prefix count summary
------------------------------------------
ASN No of nets /20 equiv MaxAgg Description
36914 552 82 3 KENET-AS, KE
37182 36 8 1 TERNET, TZ
37215 32 8 1 MAREN, MW
6879 24 2 9 ENSTINET-, EG
37661 12 8 4 NRaE1-AS, NG
327700 11 16 1 MoRENet, MZ
37654 8 1 5 RwEdNet-AS, RW
327798 4 0 3 BERNET, BI
327947 4 1 3 KNUST-, GH
37496 2 0 1 Aga-Khan-University, TZ
Complete listing at https://bgp.nsrc.org/REN/ASREN/data-ASnet-AFRINIC
Global Per AS prefix count summary
----------------------------------
ASN No of nets /20 equiv MaxAgg Description
2907 637 2202 464 SINET-AS Research Organization of Informa
36914 552 82 3 KENET-AS, KE
2152 499 507 97 CENIC-2152, US
7497 450 180 24 CSTNET-AS-AP Computer Network Information
680 284 1899 249 DFN Verein zur Foerderung eines Deutschen
2920 226 44 49 LACOE, US
1916 219 178 44 Rede Nacional de Ensino e Pesquisa, BR
376 201 162 150 RISQ-AS, CA
5786 198 16 1 UPRENET, PR
786 186 1767 183 JANET Jisc Services Limited, GB
Complete listing at https://bgp.nsrc.org/REN/ASREN/data-ASnet
Global Per AS Maximum Aggregation summary
-----------------------------------------
ASN No of nets Net Savings Description
36914 552 549 KENET-AS, KE
7497 450 426 CSTNET-AS-AP Computer Network Information Cente
2152 499 402 CENIC-2152, US
5786 198 197 UPRENET, PR
58647 183 181 KAGAWAU-AS Kagawa University, JP
2920 226 177 LACOE, US
1916 219 175 Rede Nacional de Ensino e Pesquisa, BR
18558 140 135 NETBLK-RCOEK, US
55824 147 126 NKN-CORE-NW NKN Core Network, IN
81 128 94 NCREN, US
Complete listing at https://bgp.nsrc.org/REN/ASREN/data-CIDRnet
Advertised Unallocated Addresses
--------------------------------
Unassigned Network ASN Information AS Name
164.160.192.0/21 Origin: 37661 NRaE1-AS, NG
164.160.192.0/21 Transit: 37288 WACREN, SN
203.9.156.0/24 Origin: 1851 ADELAIDE-UNIVERSITY-AS-AP The University
203.9.156.0/24 Transit: 7575 AARNET-AS-AP Australian Academic and Res
Complete listing at https://bgp.nsrc.org/REN/ASREN/data-add-IANA
Number of prefixes announced per prefix length (Global)
-------------------------------------------------------
/1:0 /2:0 /3:0 /4:0 /5:0 /6:0
/7:0 /8:0 /9:1 /10:1 /11:0 /12:9
/13:16 /14:34 /15:100 /16:1714 /17:324 /18:351
/19:484 /20:644 /21:681 /22:1120 /23:1246 /24:8062
/25:34 /26:64 /27:35 /28:0 /29:0 /30:0
/31:0 /32:0
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
36914 528 552 KENET-AS, KE
1916 60 219 Rede Nacional de Ensino e Pesquisa, BR
2152 58 499 CENIC-2152, US
23024 38 99 OCDE, US
37182 35 36 TERNET, TZ
32440 33 58 LONI, US
200521 32 57 SEAP-AGE, ES
25977 28 42 HCCS, US
37215 26 32 MAREN, MW
26898 24 32 LNOCA-ORG, US
Complete listing at https://bgp.nsrc.org/REN/ASREN/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:1 5:15 8:2 12:1 14:93 23:4
24:2 31:1 35:3 37:8 38:4 41:252
42:7 44:3 45:32 46:4 47:1 49:11
50:2 59:8 60:6 61:2 62:5 63:3
64:40 65:3 66:24 67:32 68:4 69:11
70:2 71:1 72:7 74:20 76:37 77:7
78:3 79:9 80:6 81:21 82:3 83:6
84:6 85:24 87:1 89:10 91:38 93:13
94:2 95:2 96:5 98:2 102:4 103:222
104:77 108:8 109:1 111:17 114:1 116:6
118:17 119:23 121:27 122:8 123:8 124:42
125:1 128:31 129:30 130:94 131:55 132:48
133:156 134:78 136:197 137:88 138:58 139:4
140:29 141:3 142:26 143:17 144:21 145:2
146:124 147:16 148:9 149:13 150:42 151:9
152:120 153:7 154:20 155:49 156:131 157:24
158:28 159:115 160:33 161:13 162:19 163:58
164:9 165:10 167:6 168:50 169:7 170:90
172:2 173:6 175:4 177:4 179:6 180:16
182:1 184:6 185:37 186:3 187:1 188:12
189:3 190:1 191:3 192:1196 193:236 194:87
195:66 196:10 197:337 198:468 199:209 200:204
201:18 202:369 203:186 204:348 205:160 206:164
207:267 208:52 209:143 210:102 211:1 212:41
213:4 216:53 217:12 219:6 220:3 222:1
223:4
End of report
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