[REN-BGP-stats-all] IPv4 R&E Routing Table Report - ESnet (R&E) view
REN Routing Table Report
cscora at bgp.nsrc.org
Sat Mar 23 22:20:36 UTC 2024
IPv4 R&E Routing Table Report 22:20 GMT Sat 23 Mar, 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: 18326
Prefixes after maximum aggregation (per Origin AS): 10546
Deaggregation factor: 1.74
Unique aggregates announced (without unneeded subnets): 11634
Number of IPv4 prefixes with a valid ROA: 5578
Number of IPv4 prefixes with an invalid ROA: 44
Number of IPv4 prefixes with no ROA: 12704
Total ASes present in the Internet Routing Table: 2717
Prefixes per ASN: 6.74
Origin-only ASes present in the Internet Routing Table: 2364
Origin ASes announcing only one prefix: 1055
Transit ASes present in the Internet Routing Table: 353
Transit-only ASes present in the Internet Routing Table: 61
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: 18
Max AS path prepend of ASN ( 47805) 11
Prefixes from unregistered ASNs in the Routing Table: 14
Number of instances of unregistered ASNs: 14
Number of 32-bit ASNs allocated by the RIRs: 43893
Number of 32-bit ASNs visible in the Routing Table: 636
Prefixes from 32-bit ASNs in the Routing Table: 1938
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: 0
Number of addresses announced to Internet: 176205056
Equivalent to 10 /8s, 128 /16s and 173 /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: 1985
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 4222
Total APNIC prefixes after maximum aggregation: 2136
APNIC Deaggregation factor: 1.98
Prefixes being announced from the APNIC address blocks: 4223
Unique aggregates announced from the APNIC address blocks: 2393
APNIC Region origin ASes present in the Internet Routing Table: 491
APNIC Prefixes per ASN: 8.60
APNIC Region origin ASes announcing only one prefix: 217
APNIC Region transit ASes present in the Internet Routing Table: 43
Average APNIC Region AS path length visible: 3.7
Max APNIC Region AS path length visible: 12
Number of APNIC region 32-bit ASNs visible in the Routing Table: 184
Number of APNIC addresses announced to Internet: 35448320
Equivalent to 2 /8s, 28 /16s and 230 /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: 8351
Total ARIN prefixes after maximum aggregation: 4892
ARIN Deaggregation factor: 1.71
Prefixes being announced from the ARIN address blocks: 8374
Unique aggregates announced from the ARIN address blocks: 5451
ARIN Region origin ASes present in the Internet Routing Table: 1300
ARIN Prefixes per ASN: 6.44
ARIN Region origin ASes announcing only one prefix: 463
ARIN Region transit ASes present in the Internet Routing Table: 164
Average ARIN Region AS path length visible: 3.6
Max ARIN Region AS path length visible: 14
Number of ARIN region 32-bit ASNs visible in the Routing Table: 214
Number of ARIN addresses announced to Internet: 79876864
Equivalent to 4 /8s, 194 /16s and 211 /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, 393216-401308
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: 3484
Total RIPE prefixes after maximum aggregation: 2809
RIPE Deaggregation factor: 1.24
Prefixes being announced from the RIPE address blocks: 3475
Unique aggregates announced from the RIPE address blocks: 2863
RIPE Region origin ASes present in the Internet Routing Table: 656
RIPE Prefixes per ASN: 5.30
RIPE Region origin ASes announcing only one prefix: 293
RIPE Region transit ASes present in the Internet Routing Table: 94
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: 145
Number of RIPE addresses announced to Internet: 53993984
Equivalent to 3 /8s, 55 /16s and 226 /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: 1268
Total LACNIC prefixes after maximum aggregation: 520
LACNIC Deaggregation factor: 2.44
Prefixes being announced from the LACNIC address blocks: 1267
Unique aggregates announced from the LACNIC address blocks: 700
LACNIC Region origin ASes present in the Internet Routing Table: 154
LACNIC Prefixes per ASN: 8.23
LACNIC Region origin ASes announcing only one prefix: 54
LACNIC Region transit ASes present in the Internet Routing Table: 23
Average LACNIC Region AS path length visible: 4.6
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: 4220416
Equivalent to 0 /8s, 64 /16s and 102 /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: 987
Total AfriNIC prefixes after maximum aggregation: 177
AfriNIC Deaggregation factor: 5.58
Prefixes being announced from the AfriNIC address blocks: 987
Unique aggregates announced from the AfriNIC address blocks: 227
AfriNIC Region origin ASes present in the Internet Routing Table: 52
AfriNIC Prefixes per ASN: 18.98
AfriNIC Region origin ASes announcing only one prefix: 28
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: 30
Number of AfriNIC addresses announced to Internet: 2665472
Equivalent to 0 /8s, 40 /16s and 172 /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 590 2162 464 SINET-AS Research Organization of Infor
7497 441 180 23 CSTNET-AS-AP Computer Network Informati
1237 187 74 139 KREONET-AS-KR KISTI, KR
58647 182 18 2 KAGAWAU-AS Kagawa University, JP
7575 172 329 115 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 71 4 1 MAHIDOL-BORDER-AS Mahidol University, T
4621 70 37 10 UNINET-AS-AP UNINET-, TH
9411 66 16 2 NONTRINET-AS-AP Kasetsart University, T
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
376 201 162 151 RISQ-AS, CA
668 198 631 167 DNIC-AS-00668, US
5786 197 16 1 UPRENET, PR
2152 147 507 96 CSUNET-NW, US
18558 141 18 4 NETBLK-RCOEK, US
81 126 473 31 NCREN, US
270 114 328 78 AS270, US
23024 109 7 19 OCDE, US
2920 102 34 7 LACOE, US
237 90 544 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
680 284 1899 250 DFN Verein zur Foerderung eines Deutsch
786 186 1767 183 JANET Jisc Services Limited, GB
8895 133 24 4 ISU Internet Services Unit ISU, SA
559 114 533 104 SWITCH Peering requests: peering at switch
1103 94 1247 82 SURFNET-NL SURFnet, The Netherlands, NL
2614 93 27 73 ROEDUNET, RO
137 81 676 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 77 44 68 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 154 10 67 Universidad Juarez Autonoma de Tabasco,
11340 108 25 51 Red Universitaria Nacional, CL
1916 82 176 42 Rede Nacional de Ensino e Pesquisa, BR
271640 67 8 1 UNIVERSIDADE FEDERAL DE VICOSA, BR
4270 48 16 1 Red de Interconexion Universitaria, AR
19611 48 17 2 Associacao Antonio Vieira - Unisinos, B
2715 43 99 32 Fundacao Carlos Chagas Filho de Amparo
61468 43 3 14 CEDIA, EC
28614 38 2 2 Fundacao Universidade Regional de Blume
1251 35 32 25 FUNDACAO DE AMPARO A PESQUISA DO ESTADO
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
2018 381 319 71 TENET-1, ZA
36914 204 82 3 KENET-AS, KE
327687 162 28 3 RENU, UG
8094 47 48 18 PUKNET, ZA
327700 44 16 1 MoRENet, MZ
6879 24 2 9 ENSTINET-, EG
37074 13 8 2 UG-AS, GH
37501 11 49 6 UOFS, ZA
37654 11 1 6 RwEdNet-AS, RW
37215 9 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 590 2162 464 SINET-AS Research Organization of Infor
7497 441 180 23 CSTNET-AS-AP Computer Network Informati
2018 381 319 71 TENET-1, ZA
680 284 1899 250 DFN Verein zur Foerderung eines Deutsch
36914 204 82 3 KENET-AS, KE
376 201 162 151 RISQ-AS, CA
668 198 631 167 DNIC-AS-00668, US
5786 197 16 1 UPRENET, PR
1237 187 74 139 KREONET-AS-KR KISTI, KR
786 186 1767 183 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
7497 441 418 CSTNET-AS-AP Computer Network Information Cente
2018 381 310 TENET-1, ZA
36914 204 201 KENET-AS, KE
5786 197 196 UPRENET, PR
58647 182 180 KAGAWAU-AS Kagawa University, JP
327687 162 159 RENU, UG
18558 141 137 NETBLK-RCOEK, US
8895 133 129 ISU Internet Services Unit ISU, SA
55824 131 112 NKN-CORE-NW NKN Core Network, IN
81 126 95 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
11570 UNALLOCATED 63.225.1.0/24 40498 ABQG, US
394607 UNALLOCATED 104.249.65.0/24 23024 OCDE, US
11570 UNALLOCATED 192.94.216.0/24 40498 ABQG, US
11570 UNALLOCATED 192.207.226.0/24 40498 ABQG, US
11570 UNALLOCATED 198.59.106.0/24 40498 ABQG, US
11570 UNALLOCATED 198.59.107.0/24 40498 ABQG, US
11570 UNALLOCATED 198.59.108.0/24 40498 ABQG, US
11570 UNALLOCATED 198.59.188.0/24 40498 ABQG, US
11570 UNALLOCATED 198.59.189.0/24 40498 ABQG, US
11570 UNALLOCATED 198.59.190.0/24 40498 ABQG, US
Complete listing at https://bgp.nsrc.org/REN/ESnet/data-badAS
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 /16:2018 /17:427 /18:445
/19:571 /20:862 /21:877 /22:1492 /23:1542 /24:9936
/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 191 204 KENET-AS, KE
8895 128 133 ISU Internet Services Unit ISU, SA
23024 51 109 OCDE, US
32440 38 62 LONI, US
327700 38 44 MoRENet, MZ
3267 35 77 RUNNET, RU
18632 33 65 VOLCANO-VISION, US
28614 32 38 Fundacao Universidade Regional de Blumenau, BR
46115 32 35 LUTHER, US
200521 31 53 SEAP-AGE, ES
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 14:91
18:44 23:9 24:3 31:1 35:8 38:11
40:1 41:118 42:10 44:4 45:38 46:5
47:1 49:7 50:5 52:1 59:3 60:6
61:3 62:8 63:37 64:44 65:5 66:56
67:44 68:21 69:17 70:2 71:1 72:7
74:53 76:42 77:11 78:3 79:10 80:12
81:26 82:5 83:7 84:8 85:43 86:1
87:1 89:10 91:42 92:2 93:4 94:2
95:2 97:3 98:2 101:2 102:39 103:210
104:78 107:16 108:8 109:4 114:24 116:6
117:61 118:1 119:19 121:11 123:8 124:42
125:5 128:85 129:43 130:86 131:62 132:59
133:156 134:110 136:196 137:137 138:57 139:5
140:34 141:3 142:35 143:24 144:28 145:2
146:135 147:59 148:195 149:11 150:36 151:12
152:131 153:13 154:30 155:63 156:67 157:18
158:37 159:115 160:34 161:15 162:30 163:69
164:13 165:47 166:2 167:5 168:121 169:6
170:106 171:1 172:3 173:6 174:1 175:17
177:6 179:8 180:15 181:1 182:1 184:2
185:50 186:3 187:17 188:13 189:3 190:17
191:13 192:1492 193:259 194:124 195:63 196:199
197:120 198:480 199:285 200:201 201:36 202:581
203:381 204:376 205:131 206:192 207:164 208:76
209:121 210:181 211:13 212:165 213:4 214:8
216:94 217:9 218:22 219:5 220:17 222:2
223:4
End of report
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