[REN-BGP-stats-all] IPv4 R&E Routing Table Report - ESnet (R&E) view
REN Routing Table Report
cscora at bgp.nsrc.org
Wed Oct 11 22:20:36 UTC 2023
IPv4 R&E Routing Table Report 22:20 GMT Wed 11 Oct, 2023
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: 18820
Prefixes after maximum aggregation (per Origin AS): 10756
Deaggregation factor: 1.75
Unique aggregates announced (without unneeded subnets): 11924
Number of IPv4 prefixes with a valid ROA: 5267
Number of IPv4 prefixes with an invalid ROA: 32
Number of IPv4 prefixes with no ROA: 13521
Total ASes present in the Internet Routing Table: 2751
Prefixes per ASN: 6.84
Origin-only ASes present in the Internet Routing Table: 2386
Origin ASes announcing only one prefix: 1052
Transit ASes present in the Internet Routing Table: 365
Transit-only ASes present in the Internet Routing Table: 63
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: 14
Max AS path prepend of ASN ( 47805) 11
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: 42807
Number of 32-bit ASNs visible in the Routing Table: 631
Prefixes from 32-bit ASNs in the Routing Table: 1931
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: 176603136
Equivalent to 10 /8s, 134 /16s and 192 /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: 99.5
Total number of prefixes smaller than registry allocations: 2100
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 4518
Total APNIC prefixes after maximum aggregation: 2225
APNIC Deaggregation factor: 2.03
Prefixes being announced from the APNIC address blocks: 4527
Unique aggregates announced from the APNIC address blocks: 2582
APNIC Region origin ASes present in the Internet Routing Table: 523
APNIC Prefixes per ASN: 8.66
APNIC Region origin ASes announcing only one prefix: 219
APNIC Region transit ASes present in the Internet Routing Table: 55
Average APNIC Region AS path length visible: 3.9
Max APNIC Region AS path length visible: 14
Number of APNIC region 32-bit ASNs visible in the Routing Table: 199
Number of APNIC addresses announced to Internet: 35786752
Equivalent to 2 /8s, 34 /16s and 16 /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: 5014
ARIN Deaggregation factor: 1.67
Prefixes being announced from the ARIN address blocks: 8343
Unique aggregates announced from the ARIN address blocks: 5556
ARIN Region origin ASes present in the Internet Routing Table: 1289
ARIN Prefixes per ASN: 6.47
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: 3.6
Max ARIN Region AS path length visible: 14
Number of ARIN region 32-bit ASNs visible in the Routing Table: 205
Number of ARIN addresses announced to Internet: 79887872
Equivalent to 4 /8s, 194 /16s and 254 /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: 3509
Total RIPE prefixes after maximum aggregation: 2818
RIPE Deaggregation factor: 1.25
Prefixes being announced from the RIPE address blocks: 3511
Unique aggregates announced from the RIPE address blocks: 2871
RIPE Region origin ASes present in the Internet Routing Table: 674
RIPE Prefixes per ASN: 5.21
RIPE Region origin ASes announcing only one prefix: 297
RIPE Region transit ASes present in the Internet Routing Table: 97
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: 141
Number of RIPE addresses announced to Internet: 54247424
Equivalent to 3 /8s, 59 /16s and 192 /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: 1402
Total LACNIC prefixes after maximum aggregation: 540
LACNIC Deaggregation factor: 2.60
Prefixes being announced from the LACNIC address blocks: 1399
Unique aggregates announced from the LACNIC address blocks: 720
LACNIC Region origin ASes present in the Internet Routing Table: 156
LACNIC Prefixes per ASN: 8.97
LACNIC Region origin ASes announcing only one prefix: 54
LACNIC Region transit ASes present in the Internet Routing Table: 25
Average LACNIC Region AS path length visible: 4.4
Max LACNIC Region AS path length visible: 13
Number of LACNIC region 32-bit ASNs visible in the Routing Table: 61
Number of LACNIC addresses announced to Internet: 4037888
Equivalent to 0 /8s, 61 /16s and 157 /24s
LACNIC AS Blocks 26592-26623, 27648-28671, 52224-53247,
61440-61951, 64099-64197, 262144-273820 + 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: 1038
Total AfriNIC prefixes after maximum aggregation: 157
AfriNIC Deaggregation factor: 6.61
Prefixes being announced from the AfriNIC address blocks: 1038
Unique aggregates announced from the AfriNIC address blocks: 193
AfriNIC Region origin ASes present in the Internet Routing Table: 45
AfriNIC Prefixes per ASN: 23.07
AfriNIC Region origin ASes announcing only one prefix: 23
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: 9
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 25
Number of AfriNIC addresses announced to Internet: 2577408
Equivalent to 0 /8s, 39 /16s and 84 /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 593 2162 465 SINET-AS Research Organization of Infor
7497 437 180 23 CSTNET-AS-AP Computer Network Informati
1237 188 74 139 KREONET-AS-KR KISTI, KR
58647 177 18 2 KAGAWAU-AS Kagawa University, JP
7575 176 329 119 AARNET-AS-AP Australian Academic and Re
55824 126 18 17 NKN-CORE-NW NKN Core Network, IN
4538 112 2368 69 ERX-CERNET-BKB China Education and Rese
4621 69 37 10 UNINET-AS-AP UNINET-, TH
9411 66 16 2 NONTRINET-AS-AP Kasetsart University, T
4762 63 4 1 MAHIDOL-BORDER-AS Mahidol 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
668 204 652 173 DNIC-AS-00668, US
376 202 178 151 RISQ-AS, CA
5786 197 16 1 UPRENET, PR
2152 143 507 92 CSUNET-NW, US
18558 141 18 4 NETBLK-RCOEK, US
81 126 473 31 NCREN, US
270 115 329 84 AS270, US
23024 113 7 17 OCDE, US
2920 101 34 7 LACOE, US
21976 82 51 18 NJEDGE-NET, 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 1903 249 DFN Verein zur Foerderung eines Deutsch
786 185 1767 182 JANET Jisc Services Limited, GB
8895 136 24 4 ISU Internet Services Unit ISU, SA
559 113 533 105 SWITCH Peering requests: peering at switch
2614 94 27 74 ROEDUNET, RO
1103 93 1246 82 SURFNET-NL SURFnet, The Netherlands, NL
137 81 661 76 ASGARR Consortium GARR, IT
553 75 469 75 BELWUE BelWue-Koordination, DE
1930 65 81 60 RCCN Fundacao para a Ciencia e a Tecnol
2200 64 599 59 FR-RENATER Reseau National de telecommu
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 212 176 42 Rede Nacional de Ensino e Pesquisa, BR
28391 152 10 66 Universidad Juarez Autonoma de Tabasco,
11340 104 24 48 Red Universitaria Nacional, CL
271640 72 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
61468 43 3 14 CEDIA, EC
2715 42 99 32 Fundacao Carlos Chagas Filho de Amparo
28614 38 2 2 Fundacao Universidade Regional de Blume
3596 34 4 3 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
2018 378 319 71 TENET-1, ZA
36914 255 82 3 KENET-AS, KE
327687 166 28 3 RENU, UG
8094 48 48 15 PUKNET, ZA
327700 43 16 1 MoRENet, MZ
3208 32 2 1 ARN, DZ
37074 14 8 2 UG-AS, GH
37501 11 49 6 UOFS, ZA
37654 10 1 6 RwEdNet-AS, RW
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 593 2162 465 SINET-AS Research Organization of Infor
7497 437 180 23 CSTNET-AS-AP Computer Network Informati
2018 378 319 71 TENET-1, ZA
680 283 1903 249 DFN Verein zur Foerderung eines Deutsch
36914 255 82 3 KENET-AS, KE
1916 212 176 42 Rede Nacional de Ensino e Pesquisa, BR
668 204 652 173 DNIC-AS-00668, US
376 202 178 151 RISQ-AS, CA
5786 197 16 1 UPRENET, PR
1237 188 74 139 KREONET-AS-KR KISTI, KR
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 437 414 CSTNET-AS-AP Computer Network Information Cente
2018 378 307 TENET-1, ZA
36914 255 252 KENET-AS, KE
5786 197 196 UPRENET, PR
58647 177 175 KAGAWAU-AS Kagawa University, JP
1916 212 170 Rede Nacional de Ensino e Pesquisa, BR
327687 166 163 RENU, UG
18558 141 137 NETBLK-RCOEK, US
8895 136 132 ISU Internet Services Unit ISU, SA
55824 126 109 NKN-CORE-NW NKN Core Network, IN
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
394607 UNALLOCATED 104.249.65.0/24 23024 OCDE, US
394607 UNALLOCATED 216.100.93.0/24 23024 OCDE, US
Complete listing at https://bgp.nsrc.org/REN/ESnet/data-badAS
Advertised Unallocated Addresses
--------------------------------
Unassigned Network ASN Information AS Name
134.208.0.0/16 Origin: 17711 NDHU-TW National Dong Hwa University, TW
134.208.0.0/16 Transit: 7539 TWAREN-TW National Center for High-perfo
202.58.231.0/24 Origin: 134096 EHEALTHNSW-AS-AP eHealth NSW, AU
202.58.231.0/24 Transit: 7575 AARNET-AS-AP Australian Academic and Res
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 /15:122 /16:2019 /17:411 /18:416
/19:576 /20:876 /21:860 /22:1499 /23:1566 /24:10440
/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 244 255 KENET-AS, KE
8895 131 136 ISU Internet Services Unit ISU, SA
23024 52 113 OCDE, US
32440 38 61 LONI, US
327700 38 43 MoRENet, MZ
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
27609 29 45 USC-UNIVERSITY-HOSPITAL, US
Complete listing at https://bgp.nsrc.org/REN/ESnet/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:3 5:18 6:4 8:5 12:1 14:89
18:43 23:12 24:3 31:7 35:4 38:10
40:1 41:121 42:10 44:6 45:45 46:5
47:1 49:9 50:9 52:1 59:19 60:5
61:3 62:10 63:37 64:55 65:17 66:56
67:46 68:19 69:18 70:2 71:1 72:8
74:49 76:42 77:9 78:3 79:10 80:12
81:27 82:6 83:6 84:8 85:41 86:1
87:1 89:10 91:43 92:2 93:4 94:4
95:2 96:5 97:3 98:2 101:2 102:29
103:257 104:77 107:10 108:10 109:6 111:16
114:23 116:6 117:61 118:32 119:18 121:27
122:8 123:8 124:40 125:4 128:87 129:50
130:93 131:64 132:64 133:152 134:109 136:196
137:129 138:9 139:6 140:42 141:1 142:39
143:19 144:28 145:3 146:131 147:63 148:193
149:12 150:44 151:19 152:131 153:14 154:30
155:63 156:65 157:18 158:36 159:116 160:33
161:20 162:33 163:72 164:10 165:47 166:3
167:15 168:124 169:8 170:97 171:1 172:5
173:7 174:1 175:18 177:5 179:8 180:15
182:1 184:4 185:49 186:3 187:19 188:13
189:3 190:19 191:13 192:1489 193:292 194:126
195:52 196:197 197:168 198:518 199:283 200:329
201:39 202:620 203:426 204:369 205:130 206:200
207:175 208:77 209:123 210:182 211:13 212:163
213:5 214:8 216:99 217:9 218:22 219:5
220:16 222:2 223:4
End of report
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