[REN-BGP-stats-all] IPv4 R&E Routing Table Report - ESnet (R&E) view
REN Routing Table Report
cscora at bgp.nsrc.org
Fri Jun 28 22:20:37 UTC 2024
IPv4 R&E Routing Table Report 22:20 GMT Fri 28 Jun, 2024
IPv4 BGP Table (R&E) as seen at ESnet.
Report Website: https://bgp.nsrc.org/REN
Detailed Analysis: https://bgp.nsrc.org/REN/ESnet/
Analysis Summary
----------------
BGP routing table entries examined: 18527
Prefixes after maximum aggregation (per Origin AS): 10546
Deaggregation factor: 1.76
Unique aggregates announced (without unneeded subnets): 11642
Number of IPv4 prefixes with a valid ROA: 5741
Number of IPv4 prefixes with an invalid ROA: 0
Number of IPv4 prefixes with no ROA: 12786
Total ASes present in the Internet Routing Table: 2705
Prefixes per ASN: 6.85
Origin-only ASes present in the Internet Routing Table: 2354
Origin ASes announcing only one prefix: 1038
Transit ASes present in the Internet Routing Table: 351
Transit-only ASes present in the Internet Routing Table: 62
Paths with bogon ASNs present in the IPv4 Routing Table: 0
Average AS path length visible in the Internet Routing Table: 3.7
Max AS path length visible: 15
Max AS path prepend of ASN (395156) 12
Prefixes from unregistered ASNs in the Routing Table: 2
Number of instances of unregistered ASNs: 2
Number of 32-bit ASNs allocated by the RIRs: 44894
Number of 32-bit ASNs visible in the Routing Table: 627
Prefixes from 32-bit ASNs in the Routing Table: 1730
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: 1
Number of addresses announced to Internet: 175778048
Equivalent to 10 /8s, 122 /16s and 41 /24s
Percentage of available address space announced: 4.7
Percentage of allocated address space announced: 4.7
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: 2176
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 4176
Total APNIC prefixes after maximum aggregation: 2129
APNIC Deaggregation factor: 1.96
Prefixes being announced from the APNIC address blocks: 4176
Unique aggregates announced from the APNIC address blocks: 2381
APNIC Region origin ASes present in the Internet Routing Table: 502
APNIC Prefixes per ASN: 8.32
APNIC Region origin ASes announcing only one prefix: 220
APNIC Region transit ASes present in the Internet Routing Table: 46
Average APNIC Region AS path length visible: 3.7
Max APNIC Region AS path length visible: 13
Number of APNIC region 32-bit ASNs visible in the Routing Table: 190
Number of APNIC addresses announced to Internet: 35438848
Equivalent to 2 /8s, 28 /16s and 193 /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: 8491
Total ARIN prefixes after maximum aggregation: 4930
ARIN Deaggregation factor: 1.72
Prefixes being announced from the ARIN address blocks: 8501
Unique aggregates announced from the ARIN address blocks: 5476
ARIN Region origin ASes present in the Internet Routing Table: 1297
ARIN Prefixes per ASN: 6.55
ARIN Region origin ASes announcing only one prefix: 453
ARIN Region transit ASes present in the Internet Routing Table: 163
Average ARIN Region AS path length visible: 3.6
Max ARIN Region AS path length visible: 15
Number of ARIN region 32-bit ASNs visible in the Routing Table: 216
Number of ARIN addresses announced to Internet: 79770880
Equivalent to 4 /8s, 193 /16s and 53 /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, 47/8, 48/8, 50/8, 52/8, 53/8,
54/8, 55/8, 56/8, 57/8, 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: 3468
Total RIPE prefixes after maximum aggregation: 2807
RIPE Deaggregation factor: 1.24
Prefixes being announced from the RIPE address blocks: 3460
Unique aggregates announced from the RIPE address blocks: 2881
RIPE Region origin ASes present in the Internet Routing Table: 659
RIPE Prefixes per ASN: 5.25
RIPE Region origin ASes announcing only one prefix: 295
RIPE Region transit ASes present in the Internet Routing Table: 97
Average RIPE Region AS path length visible: 3.6
Max RIPE Region AS path length visible: 13
Number of RIPE region 32-bit ASNs visible in the Routing Table: 147
Number of RIPE addresses announced to Internet: 54020352
Equivalent to 3 /8s, 56 /16s and 73 /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,
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: 1339
Total LACNIC prefixes after maximum aggregation: 529
LACNIC Deaggregation factor: 2.53
Prefixes being announced from the LACNIC address blocks: 1339
Unique aggregates announced from the LACNIC address blocks: 714
LACNIC Region origin ASes present in the Internet Routing Table: 153
LACNIC Prefixes per ASN: 8.75
LACNIC Region origin ASes announcing only one prefix: 55
LACNIC Region transit ASes present in the Internet Routing Table: 22
Average LACNIC Region AS path length visible: 4.5
Max LACNIC Region AS path length visible: 13
Number of LACNIC region 32-bit ASNs visible in the Routing Table: 63
Number of LACNIC addresses announced to Internet: 4129792
Equivalent to 0 /8s, 63 /16s and 4 /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: 1051
Total AfriNIC prefixes after maximum aggregation: 149
AfriNIC Deaggregation factor: 7.05
Prefixes being announced from the AfriNIC address blocks: 1050
Unique aggregates announced from the AfriNIC address blocks: 189
AfriNIC Region origin ASes present in the Internet Routing Table: 30
AfriNIC Prefixes per ASN: 35.00
AfriNIC Region origin ASes announcing only one prefix: 15
AfriNIC Region transit ASes present in the Internet Routing Table: 8
Average AfriNIC Region AS path length visible: 4.0
Max AfriNIC Region AS path length visible: 11
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 11
Number of AfriNIC addresses announced to Internet: 2416128
Equivalent to 0 /8s, 36 /16s and 222 /24s
AfriNIC AS Blocks 36864-37887, 327680-329727 & ERX transfers
AfriNIC Address Blocks 41/8, 45/8, 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 591 2162 464 SINET-AS Research Organization of Infor
7497 445 180 24 CSTNET-AS-AP Computer Network Informati
1237 191 74 142 KREONET-AS-KR KISTI, KR
58647 182 18 2 KAGAWAU-AS Kagawa University, JP
7575 169 329 113 AARNET-AS-AP Australian Academic and Re
55824 131 19 19 NKN-CORE-NW NKN Core Network, IN
4538 111 2384 69 ERX-CERNET-BKB China Education and Rese
4762 75 4 1 MAHIDOL-BORDER-AS Mahidol University, T
4621 69 37 10 UNINET-AS-AP UNINET-, TH
23570 59 5 11 INCHEON-AS-KR UNIVERSITY OF INCHEON, KR
Complete listing at https://bgp.nsrc.org/REN/ESnet/data-ASnet-APNIC
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
668 204 648 173 DNIC-AS-00668, US
376 202 162 151 RISQ-AS, CA
5786 198 16 1 UPRENET, PR
2920 175 34 7 LACOE, US
270 160 345 86 AS270, US
2152 151 507 96 CSUNET-NW, US
18558 140 18 4 NETBLK-RCOEK, US
81 132 469 34 NCREN, US
23024 107 7 21 OCDE, US
237 89 544 55 MERIT-AS-14, US
Complete listing at https://bgp.nsrc.org/REN/ESnet/data-ASnet-ARIN
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
680 282 1899 249 DFN Verein zur Foerderung eines Deutsch
786 184 1767 181 JANET Jisc Services Limited, GB
8895 135 24 4 ISU Internet Services Unit ISU, SA
559 113 533 103 SWITCH Peering requests: peering at switch
1103 94 1247 82 SURFNET-NL SURFnet, The Netherlands, NL
2614 91 26 71 ROEDUNET, RO
137 82 677 77 ASGARR Consortium GARR, IT
1930 79 88 74 RCCN Fundacao para a Ciencia e a Tecnol
553 78 462 78 BELWUE BelWue-Koordination, DE
3267 76 26 66 RUNNET, RU
Complete listing at https://bgp.nsrc.org/REN/ESnet/data-ASnet-RIPE
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
28391 153 10 67 Universidad Juarez Autonoma de Tabasco,
1916 140 176 43 Rede Nacional de Ensino e Pesquisa, BR
11340 109 25 52 Red Universitaria Nacional, CL
271640 64 8 1 UNIVERSIDADE FEDERAL DE VICOSA, BR
19611 48 17 2 Associacao Antonio Vieira - Unisinos, B
4270 47 16 1 Red de Interconexion Universitaria, AR
2715 44 99 33 Fundacao Carlos Chagas Filho de Amparo
61468 44 5 15 CEDIA, EC
28614 38 2 2 Fundacao Universidade Regional de Blume
3596 37 8 4 Universidad Autonoma Metropolitana, MX
Complete listing at https://bgp.nsrc.org/REN/ESnet/data-ASnet-LACNIC
AfriNIC Region per AS prefix count summary
------------------------------------------
ASN No of nets /20 equiv MaxAgg Description
36914 443 82 3 KENET-AS, KE
2018 381 319 71 TENET-1, ZA
8094 47 48 18 PUKNET, ZA
327700 45 16 1 MoRENet, MZ
37215 36 8 1 MAREN, MW
6879 24 2 9 ENSTINET-, EG
37661 12 6 4 NRaE1-AS, NG
37182 11 8 1 TERNET, TZ
37501 11 49 6 UOFS, ZA
36982 8 33 8 UCT, ZA
Complete listing at https://bgp.nsrc.org/REN/ESnet/data-ASnet-AFRINIC
Global Per AS prefix count summary
----------------------------------
ASN No of nets /20 equiv MaxAgg Description
2907 591 2162 464 SINET-AS Research Organization of Infor
7497 445 180 24 CSTNET-AS-AP Computer Network Informati
36914 443 82 3 KENET-AS, KE
2018 381 319 71 TENET-1, ZA
680 282 1899 249 DFN Verein zur Foerderung eines Deutsch
668 204 648 173 DNIC-AS-00668, US
376 202 162 151 RISQ-AS, CA
5786 198 16 1 UPRENET, PR
1237 191 74 142 KREONET-AS-KR KISTI, KR
786 184 1767 181 JANET Jisc Services Limited, GB
Complete listing at https://bgp.nsrc.org/REN/ESnet/data-ASnet
Global Per AS Maximum Aggregation summary
-----------------------------------------
ASN No of nets Net Savings Description
36914 443 440 KENET-AS, KE
7497 445 421 CSTNET-AS-AP Computer Network Information Cente
2018 381 310 TENET-1, ZA
5786 198 197 UPRENET, PR
58647 182 180 KAGAWAU-AS Kagawa University, JP
2920 175 168 LACOE, US
18558 140 136 NETBLK-RCOEK, US
8895 135 131 ISU Internet Services Unit ISU, SA
55824 131 112 NKN-CORE-NW NKN Core Network, IN
81 132 98 NCREN, US
Complete listing at https://bgp.nsrc.org/REN/ESnet/data-CIDRnet
List of Unregistered Origin ASNs (Global)
-----------------------------------------
Bad AS Designation Net Originated Transit AS Transit AS Name
26971 UNALLOCATED 129.111.0.0/16 276 OTS-AS-276, US
22272 UNALLOCATED 206.208.24.0/21 6325 ILLINOIS-CENTURY, US
Complete listing at https://bgp.nsrc.org/REN/ESnet/data-badAS
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
Complete listing at https://bgp.nsrc.org/REN/ESnet/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 /9:0 /10:0 /11:0 /12:0
/13:0 /14:35 /15:121 /16:2020 /17:426 /18:442
/19:570 /20:877 /21:888 /22:1421 /23:1536 /24:10191
/25:0 /26:0 /27:0 /28:0 /29:0 /30:0
/31:0 /32:0
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
36914 433 443 KENET-AS, KE
8895 130 135 ISU Internet Services Unit ISU, SA
23024 49 107 OCDE, US
327700 39 45 MoRENet, MZ
32440 36 62 LONI, US
3267 35 76 RUNNET, RU
28614 32 38 Fundacao Universidade Regional de Blumenau, BR
46115 32 35 LUTHER, US
200521 32 55 SEAP-AGE, ES
25977 30 44 HCCS, US
Complete listing at https://bgp.nsrc.org/REN/ESnet/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:2 5:15 6:4 8:5 12:1 14:91
18:43 23:8 24:3 31:1 35:9 38:11
40:1 41:198 42:10 44:5 45:40 46:5
47:1 49:8 50:5 52:1 59:3 60:6
61:3 62:5 63:37 64:44 65:5 66:47
67:44 68:20 69:19 70:2 71:1 72:7
74:54 76:39 77:10 78:3 79:10 80:14
81:25 82:6 83:7 84:5 85:40 86:2
87:1 89:10 91:42 92:2 93:5 94:2
95:2 96:5 97:3 98:2 101:1 102:1
103:221 104:77 107:12 108:6 109:4 114:24
116:6 117:61 118:1 119:22 121:11 123:8
124:41 125:5 128:84 129:40 130:95 131:62
132:66 133:157 134:109 136:197 137:51 138:57
139:5 140:33 141:3 142:25 143:25 144:13
145:2 146:136 147:59 148:194 149:11 150:37
151:11 152:134 153:14 154:37 155:60 156:139
157:19 158:31 159:121 160:30 161:15 162:31
163:59 164:13 165:48 166:2 167:13 168:120
169:6 170:106 171:1 172:3 173:6 174:1
175:16 177:6 179:13 180:15 181:1 182:1
184:6 185:49 186:3 187:16 188:13 189:3
190:18 191:13 192:1493 193:255 194:122 195:65
196:152 197:311 198:481 199:290 200:251 201:36
202:546 203:398 204:376 205:135 206:200 207:205
208:72 209:118 210:191 211:14 212:163 213:5
214:8 216:91 217:9 218:22 219:5 220:17
222:2 223:4
End of report
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