[REN-BGP-stats-all] IPv4 R&E Routing Table Report - ESnet (R&E) view
REN Routing Table Report
cscora at bgp.nsrc.org
Thu Aug 15 22:20:38 UTC 2024
IPv4 R&E Routing Table Report 22:20 GMT Thu 15 Aug, 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: 19637
Prefixes after maximum aggregation (per Origin AS): 10817
Deaggregation factor: 1.82
Unique aggregates announced (without unneeded subnets): 11989
Number of IPv4 prefixes with a valid ROA: 6050
Number of IPv4 prefixes with an invalid ROA: 5
Number of IPv4 prefixes with no ROA: 13582
Total ASes present in the Internet Routing Table: 2802
Prefixes per ASN: 7.01
Origin-only ASes present in the Internet Routing Table: 2424
Origin ASes announcing only one prefix: 1066
Transit ASes present in the Internet Routing Table: 378
Transit-only ASes present in the Internet Routing Table: 75
Paths with bogon ASNs present in the IPv4 Routing Table: 0
Average AS path length visible in the Internet Routing Table: 3.8
Max AS path length visible: 18
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: 45179
Number of 32-bit ASNs visible in the Routing Table: 667
Prefixes from 32-bit ASNs in the Routing Table: 1860
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: 4
Number of addresses announced to Internet: 175896576
Equivalent to 10 /8s, 123 /16s and 248 /24s
Percentage of available address space announced: 4.8
Percentage of allocated address space announced: 4.8
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: 2330
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 4646
Total APNIC prefixes after maximum aggregation: 2278
APNIC Deaggregation factor: 2.04
Prefixes being announced from the APNIC address blocks: 4644
Unique aggregates announced from the APNIC address blocks: 2644
APNIC Region origin ASes present in the Internet Routing Table: 570
APNIC Prefixes per ASN: 8.15
APNIC Region origin ASes announcing only one prefix: 242
APNIC Region transit ASes present in the Internet Routing Table: 60
Average APNIC Region AS path length visible: 3.9
Max APNIC Region AS path length visible: 13
Number of APNIC region 32-bit ASNs visible in the Routing Table: 224
Number of APNIC addresses announced to Internet: 35848192
Equivalent to 2 /8s, 35 /16s and 0 /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: 9029
Total ARIN prefixes after maximum aggregation: 5076
ARIN Deaggregation factor: 1.78
Prefixes being announced from the ARIN address blocks: 9039
Unique aggregates announced from the ARIN address blocks: 5577
ARIN Region origin ASes present in the Internet Routing Table: 1311
ARIN Prefixes per ASN: 6.89
ARIN Region origin ASes announcing only one prefix: 459
ARIN Region transit ASes present in the Internet Routing Table: 163
Average ARIN Region AS path length visible: 3.7
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: 79622656
Equivalent to 4 /8s, 190 /16s and 242 /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: 3474
Total RIPE prefixes after maximum aggregation: 2784
RIPE Deaggregation factor: 1.25
Prefixes being announced from the RIPE address blocks: 3465
Unique aggregates announced from the RIPE address blocks: 2864
RIPE Region origin ASes present in the Internet Routing Table: 662
RIPE Prefixes per ASN: 5.23
RIPE Region origin ASes announcing only one prefix: 297
RIPE Region transit ASes present in the Internet Routing Table: 104
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: 152
Number of RIPE addresses announced to Internet: 53835264
Equivalent to 3 /8s, 53 /16s and 118 /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: 1356
Total LACNIC prefixes after maximum aggregation: 521
LACNIC Deaggregation factor: 2.60
Prefixes being announced from the LACNIC address blocks: 1356
Unique aggregates announced from the LACNIC address blocks: 702
LACNIC Region origin ASes present in the Internet Routing Table: 149
LACNIC Prefixes per ASN: 9.10
LACNIC Region origin ASes announcing only one prefix: 53
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: 62
Number of LACNIC addresses announced to Internet: 4097280
Equivalent to 0 /8s, 62 /16s and 133 /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: 1130
Total AfriNIC prefixes after maximum aggregation: 156
AfriNIC Deaggregation factor: 7.24
Prefixes being announced from the AfriNIC address blocks: 1129
Unique aggregates announced from the AfriNIC address blocks: 199
AfriNIC Region origin ASes present in the Internet Routing Table: 33
AfriNIC Prefixes per ASN: 34.21
AfriNIC Region origin ASes announcing only one prefix: 15
AfriNIC Region transit ASes present in the Internet Routing Table: 9
Average AfriNIC Region AS path length visible: 3.3
Max AfriNIC Region AS path length visible: 18
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 13
Number of AfriNIC addresses announced to Internet: 2482944
Equivalent to 0 /8s, 37 /16s and 227 /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 587 2169 463 SINET-AS Research Organization of Informa
7497 447 180 24 CSTNET-AS-AP Computer Network Information
1237 190 74 145 KREONET-AS-KR KISTI, KR
58647 180 18 2 KAGAWAU-AS Kagawa University, JP
7575 169 329 113 AARNET-AS-AP Australian Academic and Rese
55824 132 18 19 NKN-CORE-NW NKN Core Network, IN
4538 111 2384 69 ERX-CERNET-BKB China Education and Resear
4762 75 4 1 MAHIDOL-BORDER-AS Mahidol University, Tha
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
2152 501 507 97 CENIC-2152, US
2920 229 44 49 LACOE, US
668 204 648 173 DNIC-AS-00668, US
5786 198 16 1 UPRENET, PR
376 191 162 148 RISQ-AS, CA
270 160 345 86 AS270, US
18558 141 18 5 NETBLK-RCOEK, US
81 132 469 34 NCREN, US
23024 96 7 21 OCDE, US
237 89 542 54 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
680 283 1899 250 DFN Verein zur Foerderung eines Deutschen
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.c
1103 95 1247 82 SURFNET-NL SURFnet, The Netherlands, NL
2614 90 26 70 ROEDUNET, RO
137 82 677 77 ASGARR Consortium GARR, IT
1930 79 88 74 RCCN Fundacao para a Ciencia e a Tecnolog
553 78 462 78 BELWUE BelWue-Koordination, DE
3267 76 26 66 NIKS, 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
1916 159 176 42 Rede Nacional de Ensino e Pesquisa, BR
28391 153 10 67 Universidad Juarez Autonoma de Tabasco, M
11340 109 25 52 Red Universitaria Nacional, CL
271640 67 8 1 UNIVERSIDADE FEDERAL DE VICOSA, BR
61468 49 5 17 CEDIA, EC
19611 48 17 2 Associacao Antonio Vieira - Unisinos, BR
4270 46 16 1 Red de Interconexion Universitaria, AR
2715 43 99 32 Fundacao Carlos Chagas Filho de Amparo a
28614 38 2 2 Fundacao Universidade Regional de Blumena
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 532 82 3 KENET-AS, KE
2018 377 319 71 TENET-1, ZA
8094 47 48 18 PUKNET, ZA
37182 38 8 1 TERNET, TZ
327700 33 16 1 MoRENet, MZ
6879 24 2 9 ENSTINET-, EG
37661 13 8 5 NRaE1-AS, NG
37501 11 49 6 UOFS, ZA
36982 8 33 8 UCT, ZA
37215 7 8 1 MAREN, MW
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 587 2169 463 SINET-AS Research Organization of Informa
36914 532 82 3 KENET-AS, KE
2152 501 507 97 CENIC-2152, US
7497 447 180 24 CSTNET-AS-AP Computer Network Information
2018 377 319 71 TENET-1, ZA
680 283 1899 250 DFN Verein zur Foerderung eines Deutschen
2920 229 44 49 LACOE, US
668 204 648 173 DNIC-AS-00668, US
5786 198 16 1 UPRENET, PR
376 191 162 148 RISQ-AS, CA
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 532 529 KENET-AS, KE
7497 447 423 CSTNET-AS-AP Computer Network Information Cente
2152 501 404 CENIC-2152, US
2018 377 306 TENET-1, ZA
5786 198 197 UPRENET, PR
2920 229 180 LACOE, US
58647 180 178 KAGAWAU-AS Kagawa University, JP
18558 141 136 NETBLK-RCOEK, US
8895 135 131 ISU Internet Services Unit ISU, SA
1916 159 117 Rede Nacional de Ensino e Pesquisa, BR
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
202.46.0.0/20 Origin: 147171 IDNIC-BRIN-AS-ID Badan Riset dan Inovasi
202.46.0.0/20 Transit: 64302 IDNIC-IDREN-AS-ID IDREN - Indonesia Rese
202.46.240.0/20 Origin: 147171 IDNIC-BRIN-AS-ID Badan Riset dan Inovasi
202.46.240.0/20 Transit: 64302 IDNIC-IDREN-AS-ID IDREN - Indonesia Rese
202.46.245.0/24 Origin: 147171 IDNIC-BRIN-AS-ID Badan Riset dan Inovasi
202.46.245.0/24 Transit: 64302 IDNIC-IDREN-AS-ID IDREN - Indonesia Rese
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 /15:118 /16:2017 /17:428 /18:455
/19:584 /20:899 /21:901 /22:1488 /23:1643 /24:11069
/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 509 532 KENET-AS, KE
8895 130 135 ISU Internet Services Unit ISU, SA
2152 58 501 CENIC-2152, US
23024 38 96 OCDE, US
37182 37 38 TERNET, TZ
32440 36 63 LONI, US
3267 35 76 NIKS, RU
18632 32 65 VOLCANO-VISION, US
28614 32 38 Fundacao Universidade Regional de Blumenau, BR
46115 32 35 LUTHER, 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 12:2 14:92
18:43 23:9 24:3 31:1 35:9 37:8
38:11 40:1 41:251 42:10 44:5 45:45
46:5 47:1 49:8 50:5 52:1 58:1
59:19 60:6 61:3 62:7 63:37 64:44
65:19 66:46 67:45 68:21 69:18 70:2
71:1 72:7 74:54 76:40 77:10 78:3
79:10 80:13 81:24 82:6 83:7 84:5
85:33 86:2 87:1 89:11 91:42 92:2
93:12 94:2 95:2 96:5 97:3 98:2
101:1 102:5 103:313 104:77 107:14 108:6
109:4 111:16 113:2 114:24 116:6 117:61
118:33 119:23 121:27 122:8 123:8 124:42
125:5 128:84 129:34 130:95 131:62 132:67
133:154 134:109 136:197 137:91 138:58 139:6
140:33 141:3 142:24 143:24 144:28 145:2
146:135 147:57 148:194 149:13 150:40 151:11
152:133 153:14 154:36 155:59 156:138 157:20
158:35 159:121 160:30 161:18 162:32 163:61
164:13 165:47 166:2 167:10 168:119 169:6
170:105 171:1 172:2 173:5 174:1 175:29
177:6 179:12 180:15 181:1 182:1 184:7
185:52 186:3 187:19 188:13 189:3 190:18
191:13 192:1503 193:256 194:120 195:65 196:147
197:317 198:602 199:290 200:284 201:37 202:638
203:429 204:401 205:167 206:214 207:306 208:69
209:170 210:219 211:14 212:162 213:6 214:8
216:89 217:9 218:22 219:5 220:17 222:2
223:4
End of report
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