[REN-BGP-stats-all] IPv4 R&E Routing Table Report - ASREN (R&E) view
REN Routing Table Report
cscora at bgp.nsrc.org
Thu Jan 9 17:05:38 UTC 2025
IPv4 R&E Routing Table Report 17:05 GMT Thu 09 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: 13654
Prefixes after maximum aggregation (per Origin AS): 7914
Deaggregation factor: 1.73
Unique aggregates announced (without unneeded subnets): 8662
Number of IPv4 prefixes with a valid ROA: 5394
Number of IPv4 prefixes with an invalid ROA: 1
Number of IPv4 prefixes with no ROA: 8259
Total ASes present in the Internet Routing Table: 2037
Prefixes per ASN: 6.70
Origin-only ASes present in the Internet Routing Table: 1766
Origin ASes announcing only one prefix: 846
Transit ASes present in the Internet Routing Table: 271
Transit-only ASes present in the Internet Routing Table: 41
Paths with bogon ASNs present in the IPv4 Routing Table: 0
Average AS path length visible in the Internet Routing Table: 4.6
Max AS path length visible: 19
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: 45996
Number of 32-bit ASNs visible in the Routing Table: 493
Prefixes from 32-bit ASNs in the Routing Table: 1202
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: 159396064
Equivalent to 9 /8s, 128 /16s and 48 /24s
Percentage of available address space announced: 4.3
Percentage of allocated address space announced: 4.3
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: 1679
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 3247
Total APNIC prefixes after maximum aggregation: 1697
APNIC Deaggregation factor: 1.91
Prefixes being announced from the APNIC address blocks: 3247
Unique aggregates announced from the APNIC address blocks: 1876
APNIC Region origin ASes present in the Internet Routing Table: 416
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: 39
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: 168
Number of APNIC addresses announced to Internet: 37786240
Equivalent to 2 /8s, 64 /16s and 146 /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: 6053
Total ARIN prefixes after maximum aggregation: 3387
ARIN Deaggregation factor: 1.79
Prefixes being announced from the ARIN address blocks: 6068
Unique aggregates announced from the ARIN address blocks: 3775
ARIN Region origin ASes present in the Internet Routing Table: 884
ARIN Prefixes per ASN: 6.86
ARIN Region origin ASes announcing only one prefix: 323
ARIN Region transit ASes present in the Internet Routing Table: 112
Average ARIN Region AS path length visible: 5.3
Max ARIN Region AS path length visible: 17
Number of ARIN region 32-bit ASNs visible in the Routing Table: 137
Number of ARIN addresses announced to Internet: 63408288
Equivalent to 3 /8s, 199 /16s and 136 /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: 2953
Total RIPE prefixes after maximum aggregation: 2457
RIPE Deaggregation factor: 1.20
Prefixes being announced from the RIPE address blocks: 2941
Unique aggregates announced from the RIPE address blocks: 2526
RIPE Region origin ASes present in the Internet Routing Table: 570
RIPE Prefixes per ASN: 5.16
RIPE Region origin ASes announcing only one prefix: 267
RIPE Region transit ASes present in the Internet Routing Table: 87
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: 136
Number of RIPE addresses announced to Internet: 54685824
Equivalent to 3 /8s, 66 /16s and 112 /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: 737
Total LACNIC prefixes after maximum aggregation: 325
LACNIC Deaggregation factor: 2.27
Prefixes being announced from the LACNIC address blocks: 733
Unique aggregates announced from the LACNIC address blocks: 420
LACNIC Region origin ASes present in the Internet Routing Table: 101
LACNIC Prefixes per ASN: 7.26
LACNIC Region origin ASes announcing only one prefix: 41
LACNIC Region transit ASes present in the Internet Routing Table: 16
Average LACNIC Region AS path length visible: 4.8
Max LACNIC Region AS path length visible: 8
Number of LACNIC region 32-bit ASNs visible in the Routing Table: 38
Number of LACNIC addresses announced to Internet: 2940736
Equivalent to 0 /8s, 44 /16s and 223 /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: 664
Total AfriNIC prefixes after maximum aggregation: 48
AfriNIC Deaggregation factor: 13.83
Prefixes being announced from the AfriNIC address blocks: 663
Unique aggregates announced from the AfriNIC address blocks: 63
AfriNIC Region origin ASes present in the Internet Routing Table: 25
AfriNIC Prefixes per ASN: 26.52
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: 4.1
Max AfriNIC Region AS path length visible: 19
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 14
Number of AfriNIC addresses announced to Internet: 572672
Equivalent to 0 /8s, 8 /16s and 189 /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 451 212 25 CSTNET-AS-AP Computer Network Information
58647 182 18 2 KAGAWAU-AS Kagawa University, JP
7575 173 313 116 AARNET-AS-AP Australian Academic and Rese
55824 146 19 20 NKN-CORE-NW NKN Core Network, IN
4538 136 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 424 507 97 CENIC-2152, US
2920 225 44 51 LACOE, US
5786 197 16 1 UPRENET, PR
376 180 144 133 RISQ-AS, CA
18558 140 18 5 NETBLK-RCOEK, US
23024 97 7 19 OCDE, US
21976 89 50 15 NJEDGE-NET, US
237 81 541 47 MERIT-AS-14, US
1736 79 16 1 MU-AS, US
81 78 220 36 NCREN, 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
786 185 1767 182 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 93 26 73 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 55 4 21 SEAP-AGE, ES
1653 52 150 49 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 212 178 43 Rede Nacional de Ensino e Pesquisa, BR
11340 109 25 52 Red Universitaria Nacional, CL
2715 46 99 35 Fundacao Carlos Chagas Filho de Amparo a
20191 28 16 1 Pontificia Universidad Catolica de Chile,
28571 19 40 18 UNIVERSIDADE DE SAO PAULO, BR
3597 18 16 2 Fundacion InnovaT, AR
21612 18 16 1 FUNDACAO INSTITUTO OSWALDO CRUZ, BR
4270 17 2 11 Red de Interconexion Universitaria, AR
28609 17 1 2 Instituto Nupef, BR
61468 14 3 5 CEDIA, EC
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 547 82 3 KENET-AS, KE
37215 32 8 1 MAREN, MW
6879 24 2 9 ENSTINET-, EG
37661 12 8 4 NRaE1-AS, NG
327700 12 16 1 MoRENet, MZ
37182 7 0 7 TERNET, TZ
37654 6 0 5 RwEdNet-AS, RW
327947 6 4 1 KNUST-, GH
329326 2 0 1 Accra-Technical-University, GH
3208 1 2 1 ARN, DZ
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 547 82 3 KENET-AS, KE
7497 451 212 25 CSTNET-AS-AP Computer Network Information
2152 424 507 97 CENIC-2152, US
680 284 1899 249 DFN Verein zur Foerderung eines Deutschen
2920 225 44 51 LACOE, US
1916 212 178 43 Rede Nacional de Ensino e Pesquisa, BR
5786 197 16 1 UPRENET, PR
786 185 1767 182 JANET Jisc Services Limited, GB
58647 182 18 2 KAGAWAU-AS Kagawa University, JP
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 547 544 KENET-AS, KE
7497 451 426 CSTNET-AS-AP Computer Network Information Cente
2152 424 327 CENIC-2152, US
5786 197 196 UPRENET, PR
58647 182 180 KAGAWAU-AS Kagawa University, JP
2920 225 174 LACOE, US
1916 212 169 Rede Nacional de Ensino e Pesquisa, BR
18558 140 135 NETBLK-RCOEK, US
55824 146 126 NKN-CORE-NW NKN Core Network, IN
23024 97 78 OCDE, 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 /14:33 /15:97 /16:1562 /17:282 /18:304
/19:413 /20:581 /21:630 /22:1017 /23:1148 /24:7429
/25:34 /26:64 /27:33 /28:0 /29:0 /30:0
/31:0 /32:0
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
36914 523 547 KENET-AS, KE
1916 60 212 Rede Nacional de Ensino e Pesquisa, BR
2152 58 424 CENIC-2152, US
23024 37 97 OCDE, US
32440 32 55 LONI, US
200521 32 55 SEAP-AGE, ES
25977 28 42 HCCS, US
37215 26 32 MAREN, MW
26898 24 32 LNOCA-ORG, US
36794 21 22 SCOCA, 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 23:2
24:2 31:1 35:3 37:8 38:3 41:227
42:7 44:3 45:28 46:4 47:1 49:10
59:8 60:6 61:2 62:5 63:2 64:19
65:3 66:19 67:32 68:3 69:9 70:2
72:7 74:19 76:31 77:3 78:3 79:10
80:6 81:24 82:2 83:6 84:6 85:25
87:1 89:11 91:38 93:13 94:2 95:2
96:5 98:2 101:1 102:3 103:227 104:74
108:2 109:1 111:17 114:1 116:6 118:17
119:23 121:27 122:8 123:8 124:42 125:1
128:31 129:28 130:92 131:53 132:18 133:155
134:74 136:195 137:52 138:58 139:4 140:25
141:3 142:18 143:12 144:23 145:2 146:122
147:21 148:9 149:13 150:39 151:3 152:106
153:6 154:15 155:41 156:134 157:18 158:25
159:115 160:32 161:12 162:16 163:58 164:9
165:8 167:7 168:27 169:6 170:27 172:2
173:7 175:4 177:4 179:4 180:16 182:2
184:5 185:39 186:2 187:4 188:12 189:3
190:1 191:3 192:1104 193:231 194:80 195:65
196:8 197:330 198:426 199:184 200:128 201:17
202:371 203:185 204:335 205:130 206:154 207:266
208:46 209:129 210:101 211:1 212:41 213:4
216:52 217:12 219:6 220:3 222:1 223:4
End of report
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